Regulation No. 106-00

Name:Regulation No. 106-00
Description:Tyres - Agricultural Vehicles and their Trailers.
Official Title:Uniform Provisions Concerning the Approval of: Pneumatic Tyres for Agricultural Vehicles and their Trailers.
Country:ECE - United Nations
Date of Issue:1998-07-03
Amendment Level:00 Series, Supplement 14
Number of Pages:62
Vehicle Types:Agricultural Tractor, Component
Subject Categories:Steering, Wheels and Tyres
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Keywords:

tyre, imp, tyres, nominal, rim, diameter, width, test, regulation, section, approval, designation, speed, load, annex, size, means, type, tread, paragraph, agricultural, category, symbol, service, date, implement, code, force, wheel, entry, table, radial, markings, supplement, structure, capacity, theoretical, manufacturer, pressure, series, index, forestry, diagonal, applicable, case, amendments, number, tractor, shown, application

Text Extract:

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E/ECE/324
) Rev.2/Add.105/Rev.2/Amend.4
E/ECE/TRANS/505 )
February 22, 2017
STATUS OF UNITED NATIONS REGULATION
ECE 106-00
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF:
PNEUMATIC TYRES FOR AGRICULTURAL
VEHICLES AND THEIR TRAILERS
Incorporating:
00 series of amendments
Date of Entry into Force: 07.05.98
Corr. 1 of 01.08.02 to the 00 series of amendments
Date of Entry into Force: 26.06.02
Supplement 1 to the 00 series of amendments
Date of Entry into Force: 13.01.00
Supplement 2 to the 00 series of amendments
Date of Entry into Force: 31.01.03
Corr. 1 of 13.05.04 to Supplement 2 to the 00 series of amendments
Date of Entry into Force: 10.03.04
Supplement 3 to the 00 series of amendments
Date of Entry into Force: 13.11.04
Supplement 4 to the 00 series of amendments
Date of Entry into Force: 02.02.07
Supplement 5 to the 00 series of amendments
Date of Entry into Force: 10.11.07
Corr. 1 of 07.08.08 to Supplement 5 to the 00 series of amendments
Date of Entry into Force: 25.06.08
Supplement 6 to the 00 series of amendments
Date of Entry into Force: 26.02.09
Supplement 7 to the 00 series of amendments
Date of Entry into Force: 24.10.09
Supplement 8 to the 00 series of amendments
Date of Entry into Force: 17.03.10
Supplement 9 to the 00 series of amendments
Date of Entry into Force: 27.01.13
Supplement 10 to the 00 series of amendments
Date of Entry into Force: 03.11.13
Supplement 11 to the 00 series of amendments
Date of Entry into Force: 15.06.15
Supplement 12 to the 00 series of amendments
Date of Entry into Force: 08.10.15
Supplement 13 to the 00 series of amendments
Date of Entry into Force: 18.06.16
Supplement 14 to the 00 series of amendments
Date of Entry into Force: 09.02.17

REGULATION NO. 106
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF PNEUMATIC TYRES FOR
AGRICULTURAL VEHICLES AND THEIR TRAILERS
CONTENTS
REGULATION
1. Scope
2. Definitions
3. Markings
4. Application for approval
5. Approval
6. Requirements
7. Modification of tyre type and extension of approval
8. Conformity of production
9. Penalties for non-conformity of production
10. Production definitively discontinued
11. Names and addresses of technical services responsible for conducting approval tests, of test
laboratories, and of Type Approval Authorities

REGULATION NO. 106
1. SCOPE
This Regulation covers new pneumatic tyres designed primarily, but not only, for agricultural
and forestry vehicles (power-driven vehicles in Category T ), agricultural machines
(power-driven and trailed) and agricultural trailers, and identified by speed category symbols
corresponding to speeds of 65km/h (Speed Symbol 'D') and below.
It does not apply to tyre types designated primarily for other purposes, such as:
(a)
(b)
Earth-moving equipment;
Industrial and lift trucks.
2. DEFINITIONS
For the purposes of this Regulation:
2.1. "Type of agricultural tyre" means a category of tyres which do not differ in such essential
respects as:
2.1.1. the manufacturer;
2.1.2. tyre-size designation;
2.1.3. category of use:
(a)
(b)
(c)
(d)
(e)
(f)
(g)
(h)
(i)
Tractor - Steering wheel:
Tractor - Drive wheel - standard tread
Tractor - Drive wheel - special tread
Implement - traction:
Implement - trailer;
Implement - mixed applications;
Forestry machines - standard tread;
Forestry machines - special tread;
Construction applications (IND).
2.1.4. structure (diagonal (bias-ply), bias-belted, radial-ply);
2.1.5. speed category symbol;

2.15. "Tyre-size designation" means a designation showing:
2.15.1. the nominal section width (S1). This value must be expressed in mm.
2.15.2. the nominal aspect ratio (Ra).
2.15.3. an indication of the structure, placed in front of the nominal rim diameter marking, as
follows:
2.15.3.1. on diagonal (bias-ply) tyres, the symbol "-" or the Letter "D";
2.15.3.2. on radial-ply tyres, the Letter "R";
2.15.3.3. on bias-belted tyres, the Letter "B".
2.15.4. the conventional number "d" denoting the nominal rim diameter;
2.15.5. optionally, the Letters "IMP" after the nominal rim diameter marking in case of Implement
tyres;
2.15.6. optionally, the Letters "FRONT" after the nominal rim diameter marking in case of Tractor
steering wheel tyres;
2.15.7. However for tyres listed in Annex 5 the "tyre size designation" is that shown in the first
column of those tables.
2.15.8. The Letters "IF" before the nominal section width in case of "Improved Flexion Tyre".
The Letters "VF" before the nominal section width in case of "Very High Flexion Tyre".
2.15.9. The Letters "CFO" after the nominal rim diameter marking in case of "Improved Flexion" or
"Very High Flexion" tractor-drive wheel tyres specifically designed for the equipments of
machines to be used in Cyclic Field Operations.
2.15.10. The Letters "CHO" after the nominal rim diameter marking in case of standard tractor-drive
wheel tyres specifically designed for the equipments of machines to be used in Cyclic
Harvesting Operations.
2.15.11. The Letters "IND" after the nominal rim diameter marking in case of tyres for construction
application (industrial tractors).

2.21. "Tractor steering wheel tyre" means a tyre designed to be fitted to non-driven axles of
agricultural and forestry tractors (motor vehicles in Category T); The tread pattern of the tyre
generally consists of circumferential grooves and ribs.
2.22. "Implement tyre" means a tyre designed primarily for agricultural machines or implements
(vehicles in Category S) or for agricultural trailers (vehicles in Category R); however it may
also equip either front steering wheels and drive wheels of agricultural and forestry tractors
(vehicles in Category T), but it is not suitable for sustained high torque services.
2.23. "Traction tyre" means a tyre designed primarily for the equipment of driven axles of
implements or agricultural machinery, excluding sustained high torque services. The tread
pattern of the tyre generally consists of lugs or cleats. The type of application is
identified with the symbol:
2.24. "Trailer tyre" means a tyre designed for the equipment of non driven (trailed) axles of
implements, agricultural machinery or trailers.
The type of application is identified with the symbol:
2.25. "Mixed applications tyre" means a tyre designed to be fitted to either driven and non
driven axles of implements, agricultural machinery or trailers;
2.26. "Service description" means the association of a load capacity index with a speed
category symbol;
2.26.1. In case of implement tyres the service description is supplemented with the relevant symbol
for the type of application concerned (traction or trailer) as defined in Paragraphs 2.23.
and 2.24.
2.27. "Supplementary service description" means an additional service description, marked
within a circle, to identify a special type of service (load rating and speed category) to which
the tyre type is also allowed in addition to the applicable load variation with speed
(see Annex 7).
2.28. "Load-capacity index" means one number which indicates the load the tyre can carry in
single formation at the speed corresponding to the associated speed category and when
operated in conformity with the requirements governing utilisation specified by the
manufacturer. The list of these indices and their corresponding masses is given in Annex 4;

2.39. "Test rim" means the rim on which a tyre must be fitted for the performance test.
2.40. "Tyre classification code" means the optional marking detailed in Annex 10 that identifies
the category of use and the particular type of tread pattern and application as specified by
ISO 4251-4.
2.41. "Forestry tyre" means a tyre designed to be fitted to machines or equipments used in
forestry applications.
2.42. "Construction application (industrial tractor) tyre" means a tyre designed to be fitted on
industrial tractors, backhoe loaders and other vehicles working in industrial or construction
applications (e.g. loaders, excavators, etc.) or some agricultural vehicles (e.g. telehandlers).
3. MARKINGS
3.1. Tyres must bear:
3.1.1. the manufacturer's trade name or mark;
3.1.2. the tyre-size designation as defined in Paragraph 2.15.;
3.1.3. an indication of the structure as follows:
3.1.3.1. on diagonal (bias-ply) tyres, no additional marking;
3.1.3.2. on radial-ply tyres, optionally, the word "RADIAL";
3.1.3.3. on bias-belted tyres, the words "BIAS-BELTED";
3.1.4. the "service description" as defined in Paragraph 2.26.
3.1.4.1. in the case of implement tyre, the service description supplemented with the relevant
application symbol;
3.1.4.2. in the case of implement tyre for mixed applications, two service descriptions one for "trailer"
applications and the other for "traction";
3.1.5. the supplementary service description, if applicable.
3.1.6. the inscription "DEEP" (or "R-2") in the case of a special tread tyre;
3.1.7. the inscriptions "F-1" or "F-2" or "F-3" in the case of a Tractor steering wheel tyre that is not
already marked as per Paragraph 2.15.6. above;
3.1.8. the inscriptions "LS-1", "LS-2", "LS-3" or "LS-4" in the case of tyres for forestry machines.
3.1.8.1. 'LS-3' identifies special tread tyres.
3.1.8.2. The inscription 'I-3' for implement tyres with traction tread as identified in Annex 5, Tables 5
and 6.
3.1.9. the inscription "IMPLEMENT" in the case of an implement tyre that is not already marked as
per Paragraph 2.15.5. above;
3.1.10. the word "TUBELESS" if the tyre is designed for use without an inner tube;

4.1.5. The speed category symbol.
4.1.6. The load-capacity index of the tyre, specifying in case of implement tyres that for traction
(only) and that for trailer application, if applicable.
4.1.7. Whether the tyre is to be fitted with or without an inner tube.
4.1.8. The supplementary service description, if applicable.
4.1.9. The tyre/rim configuration.
4.1.10. The rim to be used for measurements and the rim to be used for tests.
4.1.11. The rim(s) on which the tyre can be mounted.
4.1.12. The inflation pressure (bar or kPa) for measurements.
4.1.13. The factor X referred to in Paragraph 2.18. or the applicable table of Annex 5.
4.1.14. The cold inflation pressure that shall not be exceeded for bead seating during tyre mounting,
as specified by the tyre manufacturer for the tyre type.
4.1.15. The test pressure, in kPa (or in bar).
4.2. On request of the Approval Authority, the tyre manufacturer must also submit a complete
technical file for each tyre type containing in particular sketches or photographs (three
copies) to identify the tread pattern and the envelope of the inflated tyre mounted on the
measuring rim showing the relevant dimensions (see Paragraphs 6.1. and 6.2.) of the
component type submitted for approval. It shall also either contain the test report issued by
an approved test laboratory or be accompanied by one sample of the tyre type, as
requested by the Type Approval Authority.
5. APPROVAL
5.1. If the type of pneumatic tyre submitted for approval in pursuance to this Regulation meets
the requirements of Paragraph 6 below, approval of that type of tyre shall be granted.
5.2. An approval number shall be assigned to each type approved; its first two digits (at
present 00 for the Regulation in its original form) shall indicate the series of amendments
incorporating the most recent major technical amendments made to the Regulation at the
time of issue of the approval. The same Contracting Party may not assign the same number
to another type of pneumatic tyre.
5.3. Notice of approval or extension or refusal or withdrawal of approval or production definitively
discontinued of a type of pneumatic tyre pursuant to this Regulation shall be communicated
to the Parties to the 1958 Agreement which apply this Regulation, by means of a form
conforming to the model in Annex 1 to this Regulation.

6.1.2. However, for the types of tyre for which the size designation is given in the first column of
the tables in Annex 5, the theoretical rim width (A1) and the nominal section width (S1) are
given opposite the tyre size designation in those tables.
6.2. Outer Diameter of a Tyre
6.2.1. Except as provided by Paragraph 6.2.2., the outer diameter of a tyre is calculated by the
following formula:
where:
D = d + 2 H
D
d
H
is the outer diameter expressed in mm,
is the conventional number denoting the nominal rim diameter expressed in mm
(see Paragraph 2.16.),
is the nominal section height in mm and is equal to:
H = 0.01 × Ra × S1
where:
Ra
S1
is the nominal aspect ratio,
is the "nominal section width" in mm
all as shown on the sidewall of the tyre in the tyre-size designation in conformity with the
requirements of Paragraph 2.15.
6.2.2. However, for the types of tyres for which the size designation is given in the first column of
the tables of Annex 5 the outer diameter (D) and the nominal rim diameter (d) expressed
in mm are given opposite the tyre size designation in those tables.
6.3. Tyre section width: specification of tolerances
6.3.1. The overall width of a tyre may be less than the section width determined pursuant to
Paragraph 6.1., or shown in Annex 5;
6.3.2. The overall width of a tyre may not exceed the section width determined pursuant to
Paragraph 6.1. by more than the following:
Radial construction: +5%
Diagonal (bias) construction: +8%
6.3.3. However, for the types of tyre for which the size designation is given in the first column of
the tables in Annex 5, the allowed percentages are those given in the relevant tables, if any.

6.5.4. Where a tyre manufacturer produces a range of tyres it is not considered necessary to carry
out tests on every type of tyre in the range.
7. MODIFICATION OF TYRE TYPE AND EXTENSION OF APPROVAL
7.1. Every modification of a tyre type shall be notified to the Type Approval Authority which
approved the tyre type. That Authority may then either:
7.1.1. Consider that the modifications made are unlikely to have an appreciable adverse effect and
that in any case the tyre still meet the requirements; or
7.1.2. Require a further test report from the Technical Service responsible for carrying out the
tests.
7.2. A modification of the tread pattern of the tyre shall not be considered to necessitate a
repetition of the tests prescribed in Paragraph 6 of this Regulation.
7.3. Confirmation or refusal of approval, specifying the alterations, shall be communicated by the
procedure specified in Paragraph 5.3. above to the Parties to the Agreement which apply
this Regulation.
7.4. The Type Approval issuing the extension of approval shall assign a series number for such
an extension and inform thereof the other Parties to the 1958 Agreement applying this
Regulation by means of a communication form conforming to the model in Annex 1 to this
Regulation.
8. CONFORMITY OF PRODUCTION
The conformity of production procedures shall comply with those set out in the Agreement,
Appendix 2 (E/ECE/324-E/ECE/TRANS/505/Rev.2), with the following requirements:
8.1. The pneumatic tyres approved under this Regulation shall be so manufactured as to
conform to the type approved by meeting the requirements set forth in Paragraph 6 above.
8.2. The Type Approval which has granted type approval may at any time verify the conformity
control methods applied in each production facility. For each production facility, the normal
frequency of these verifications shall be once every two years.
9. PENALTIES FOR NON CONFORMITY OF PRODUCTION
9.1. The approval granted in respect of a type of pneumatic tyre pursuant to this Regulation may
be withdrawn if the requirement laid down in Paragraph 8.1. above is not complied with or if
the tyres taken from the series have failed to pass the tests prescribed in that paragraph.
9.2. If a Party to the Agreement which applies this Regulation withdraws an approval it has
previously granted, it shall forthwith so notify the other Contracting Parties which apply this
Regulation, by means of a communication form conforming to the model in Annex 1 to this
Regulation.

EXPLANATORY FIGURE
(see Paragraphs 2.2. and 4.1.)
Tyre Cross Section
Lug (cleat) tread pattern
Circumferential Rib tread pattern

5.6. Whether the tyre is to be fitted with or without an inner tube: .........................................................
5.7. The supplementary service description, if applicable: ....................................................................
6. Technical Service and, where applicable, test laboratory approved for purposes of approval or
of verification of conformity: ............................................................................................................
7. Date of report issued by that service: .............................................................................................
8. Number of report issued by that service: ........................................................................................
9. Reason(s) of extension (if applicable): ............................................................................................
10. Any remarks: ...................................................................................................................................
11. Place: ..............................................................................................................................................
12. Date: ................................................................................................................................................
13. Signature: ........................................................................................................................................
14. Annexed to this communication is a list of documents in the approval file deposited at the Type
Approval Authorities having delivered the approval and which can be obtained upon request.

ANNEX 3
ARRANGEMENT OF TYRE MARKINGS
(see Paragraphs 3.1. and 3.3.)
PART A: DRIVE WHEEL TYRES FOR AGRICULTURAL TRACTORS
Example of the markings to be borne by types of tyres
complying with this Regulation
Tyres of Nominal
Section Width
up to 130 b = 4
c = 4
135 to 235 b = 6
c = 4
240 and above b = 9
c = 4
These markings define a Drive wheel tyre:
(a) having a nominal section width of 360,
(b) having a nominal aspect ratio of 70,
MINIMUM HEIGHTS OF MARKINGS (mm)
TYRES OF RIM DIAMETER CODE
UP TO 12 13 TO 19.5 20 AND ABOVE
b = 6
c = 4
b = 6
c = 4
b = 9
c = 4
b = 9
c = 4
b = 9
c = 4
b = 9
c = 4
(c)
of radial ply structure (R),
(d) having a nominal rim diameter of 610 for which the code is 24,
(e) having a load capacity of 1,250kg, corresponding to load Index 116 in Annex 4,
(f)
(g)
classified in the Speed Category A8 (reference speed 40km/h),
allowed to be used additionally at 50km/h (Speed Category Symbol B) with a load capacity of
1,150kg corresponding to the load capacity Index 113 shown in Annex 4,

PART B: STEERING WHEEL TYRES FOR AGRICULTURAL
AND FORESTRY TRACTORS
Example of the markings to be borne by types of tyres
complying with this Regulation
Tyres of Nominal
Section Width
up to 130 b = 4
c = 4
135 to 235 b = 6
c = 4
240 and above b = 9
c = 4
These markings define a steering wheel tyre:
(a) having a nominal section width of 250,
(b) having a nominal aspect ratio of 70,
MINIMUM HEIGHTS OF MARKINGS (mm)
TYRES OF RIM DIAMETER CODE
UP TO 12 13 TO 19.5 20 AND ABOVE
b = 6
c = 4
b = 6
c = 4
b = 9
c = 4
b = 9
c = 4
b = 9
c = 4
b = 9
c = 4
(c)
(d)
of radial-ply structure (R),
having a nominal rim diameter of 405mm, for which the code is 16, designed for the equipment of
non driven steering axles of agricultural tractors (FRONT)
(e) having load capacities of 925kg, corresponding to the load capacity Index 105 shown in Annex 4,
(f)
(g)
classified in the nominal Speed Category A6 (reference speed 30km/h),
for fitting without an inner tube "tubeless", and
(h) manufactured during the twenty-fifth week of the year 2006
(see Paragraph 3.3. of the Regulation).

PART C: IMPLEMENT TYRES
Example of the markings to be borne by types of tyres
complying with this Regulation
Tyres of Nominal
Section Width
up to 130 b = 4
c = 4
d = 7
135 to 235 b = 6
c = 4
d = 12
240 and above b = 9
c = 4
d = 12
These markings define an implement tyre:
(a) having a nominal section width of 250,
(b) having a nominal aspect ratio of 70,
MINIMUM HEIGHTS OF MARKINGS (mm)
TYRES OF RIM DIAMETER CODE
UP TO 12 13 TO 19.5 20 AND ABOVE
b = 6
c = 4
d = 12
b = 6
c = 4
d = 12
b = 9
c = 4
d = 12
b = 9
c = 4
d = 12
b = 9
c = 4
d = 12
b = 9
c = 4
d = 12
(c)
of radial-ply structure (R),
(d) having a nominal rim diameter of 508mm, for which the code is 20,
(e)
designed primarily for the equipment of implements, agricultural machinery or agricultural
trailers (IMP),
(f) having load capacities of 690kg corresponding to the load capacity Index 95 shown in Annex 4
when used on driven axles (traction application), as identified by the appropriate symbol,

PART D: TYRES FOR FORESTRY MACHINES
Example of the markings to be borne by types of tyres
complying with this Regulation



600/55 – 26.5
b
LS-2
b
154 A8
b





TUBELESS
c
2,506
c


MINIMUM HEIGHTS OF MARKINGS: b: 9mm
c: 4mm
These markings define a tyre for forestry machines (LS):
(a)
Having a nominal section width of 600;
(b)
Having a nominal aspect ratio of 55;
(c)
Of diagonal ply structure (-);
(d)
Having a nominal rim diameter of 673mm for which the code is 26.5;
(e)
Having an intermediate tread ("LS-2");
(f) Having a load capacity of 3,750kg, corresponding to load index 154 in Annex 4;
(g)
(h)
(i)
Classified in the speed Category A8 (reference speed 40km/h);
For fitting without an inner tube ("tubeless");
Manufactured during the twenty-fifth week of the year 2006 (see Paragraph 3.3. of the Regulation).
The positioning and order of the markings constituting the tyre designation are as follows:
(a)
(b)
(c)
(d)
The size designation, comprising the nominal section width, the nominal aspect ratio, the type of
structure symbol (where applicable) and the nominal rim diameter, must be grouped as shown in
the above example: 600/55 – 26.5;
The inscription 'LS', followed by the Number 1, 2, 3 or 4 as appropriate, is placed after the size
designation, as shown in the above example: LS-2;
The service description (load index and the speed category symbol) is placed near the size
designation. It may either precede or follow it or be placed above or below it;
The symbols 'TUBELESS' and the date of production may be at a distance from the size
designation.

ANNEX 4
LIST OF LOAD CAPACITY INDICES (LI) AND CORRESPONDING
MAXIMUM MASS TO BE CARRIED (kg)
(see Paragraph 2.28.)
LI kg LI kg LI kg LI kg
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
46.2
47.5
48.7
50
51.5
53
54.5
56
58
60
61.5
63
65
67
69
71
73
75
77.5
80
82.5
85
87.5
90
92.5
95
97.5
100
103
106
109
112
115
118
121
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
125
128
132
136
140
145
150
155
160
165
170
175
180
185
190
195
200
206
212
218
224
230
236
243
250
257
265
272
280
290
300
307
315
325
335
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
345
355
365
375
387
400
412
425
437
450
462
475
487
500
515
530
545
560
580
600
615
630
650
670
690
710
730
750
775
800
825
850
875
900
925
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
950
975
1,000
1,030
1,060
1,090
1,120
1,150
1,180
1,215
1,250
1,285
1,320
1,360
1,400
1,450
1,500
1,550
1,600
1,650
1,700
1,750
1,800
1,850
1,900
1,950
2,000
2,060
2,120
2,180
2,240
2,300
2,360
2,430
2,500

ANNEX 5
THEORETICAL RIM, OUTER DIAMETER AND NOMINAL SECTION WIDTH
OF TYRES OF CERTAIN SIZE DESIGNATIONS
Table 1
Agricultural Steering Wheels - Normal and Low Section Sizes
Notes:
1. Agricultural steering wheels tyres are identified either by suffix "Front" placed after the Tyre size
designation (e.g. 4.00 - 9 Front) or by one of the following additional markings added to the Tyre
sidewalls: "F - 1", "F - 2" or "F-3".
2. Tyres of radial structure are identified by means of the Letter "R" in place of " - " (e.g. 4.00R9)

Table 2 (2 of 5) – Continued
Tyre size
Designation
Theoretical
rim width
code (A1)
Nominal section
Width (S1) (mm)
Overall Diameter (D)
(mm)
Radial Diagonal Radial Diagonal
Nominal rim
Diameter (d)
(mm)
8.3 − 16
8.3 − 20
8.3 − 22
8.3 − 24
8.3 − 26
8.3 − 28
8.3 − 32
8.3 − 36
8.3 − 38
8.3 − 42
8.3 − 44
9.5 − 16
9.5 − 18
9.5 − 20
9.5 − 22
9.5 − 24
9.5 − 26
9.5 − 28
9.5 − 32
9.5 − 36
9.5 − 38
9.5 − 42
9.5 − 44
9.5 − 48
7
7
7
7
7
7
7
7
7
7
7
8
8
8
8
8
8
8
8
8
8
8
8
8
211
211
211
211
211
241
241
241
241
241
241
211
211
211
211
211
211
211
211
211
211
211
241
241
241
241
241
241
241
241
241
241
241
241
985
1,190
1,290
1,440
1,495
940
1,040
1,140
1,345
1,550
1,650
790
890
940
995
1,045
1,095
1,195
1,300
1,350
1,450
1,500
845
895
945
995
1,050
1,100
1,250
1,355
1,405
1,505
1,555
1,655
406
508
559
610
660
711
813
914
965
1,067
1,118
406
457
508
559
610
660
711
813
914
965
1,067
1,118
1,219

Table 2 (4 of 5) – Continued
Tyre size
Designation
Theoretical
rim width
code (A1)
Nominal section
Width (S1) (mm)
Overall Diameter (D)
(mm)
Radial Diagonal Radial Diagonal
Nominal rim
Diameter (d)
(mm)
14.9/80 − 24
14.9 − 20
14.9 − 24
14.9 − 26
14.9 − 28
14.9 − 30
14.9 − 38
14.9 − 46
15.5 − 38
16.9 − 24
16.9 − 26
16.9 − 28
16.9 − 30
16.9 − 34
16.9 − 38
16.9 − 42
18.4 − 16.1
18.4 − 24
18.4 − 26
18.4 − 28
18.4 − 30
18.4 − 34
18.4 − 38
18.4 − 42
18.4 − 46
12
13
13
13
13
13
13
13
14
15
15
15
15
15
15
15
16
16
16
16
16
16
16
16
16
378
378
378
378
378
378
394
429
429
429
429
429
429
429
467
467
467
467
467
467
467
467
368
378
378
378
378
378
378
394
429
429
429
429
429
429
467
467
467
467
467
467
467
467
1,245
1,295
1,350
1,400
1,600
1,824
1,565
1,320
1,370
1,420
1,475
1,575
1,675
1,775
1,395
1,440
1,490
1,545
1,645
1,750
1,850
1,958
1,215
1,165
1,265
1,315
1,365
1 ,415
1,615
1,570
1,335
1,385
1,435
1,485
1,585
1,690
1,137
1,400
1,450
1,501
1,550
1,650
1,750
1,850
610
508
610
660
711
762
965
1,168
965
610
660
711
762
864
965
1,067
409
610
660
711
762
864
965
1,067
1,168

Table 3
Drive wheel Tyres for Agricultural Tractors - Low Section Series
Tyre size
Designation
Theoretical
rim width
code (A1)
Nominal section
Width (S1) (mm)
Overall Diameter (D)
(mm)
Nominal rim
Diameter (d)
(mm)
11.2/78 − 28
12.4/78 − 28
12.4/78 − 36
13.6/78 − 28
13.6/78 − 36
14.9/78 − 28
16.9/78 − 28
16.9/78 − 30
16.9/78 − 34
16.9/78 − 38
18.4/78 − 30
18.4/78 − 38
10
11
11
12
12
13
15
15
15
15
16
16
296
327
327
367
367
400
452
452
452
452
490
490
1,180
1,240
1,440
1,285
1,490
1,345
1,410
1,460
1,560
1,665
1,525
1,730
711
711
914
711
914
711
711
762
864
965
762
965

Table 5 (1 of 3)
Agricultural Implement Tyres - Normal Section Sizes
Tyre size
Designation
Theoretical
rim width
code (A1)
Nominal section
Width (S1)
(mm)
Overall
Diameter (D)
(mm)
(*)
Nominal rim
Diameter (d)
(mm)
125 − 15 IMP
140 − 6 IMP
165 − 15 IMP
190-8 IMP
2.50 − 4 IMP
2.75 − 4 IMP
2.50 − 8 IMP
3.00 − 4 IMP
3.00 − 8 IMP
3.00 − 10 IMP
3.25 − 8 IMP
3.25 − 16 IMP
3.50 − 5 IMP
3.50 − 6 IMP
3.50 − 8 IMP
3.50 − 16 IMP
4.00 − 4 IMP
4.00 − 5 IMP
4.00 − 6 IMP
4.00 − 8 IMP
4.00 − 9 IMP
4.0 − 10 IMP
4.00 − 10 IMP
4.00 − 12 IMP
4.00 − 15 IMP
4.00 − 16 IMP
4.00 − 18 IMP
4.00 − 19 IMP
4.00 − 21 IMP
4.00/4.50 − 21 IMP
4.10 − 4 IMP
4.10 − 6 IMP
4.10/3.50 − 4 IMP
3.5
4.5
4.5
5.50
1.75
1.75
1.5
2.5
2.5
2.5
2.10
1.85
3
2.5
2.5
1.85
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3.25
3.25
2.10
127
135
167
182
68
70
68
90
90
90
84
88
95
100
100
92
114
102
114
112
112
114
114
112
112
114
112
114
112
110
102
102
89
590
315
650
430
225
234
338
265
367
418
366
590
292
343
393
590
313
310
374
418
443
455
465
519
595
618
672
694
765
765
268
319
272
425
460
465
475
536
612
688
381
152
381
203
102
102
203
102
203
254
203
406
127
152
203
406
102
127
152
203
229
254
254
305
381
406
457
483
533
533
102
152
101

Table 5 (3 of 3) – Continued
Tyre size
Designation
Theoretical
rim width
code (A1)
Nominal section
Width (S1)
(mm)
Overall
Diameter (D)
(mm)
(*)
Nominal rim
Diameter (d)
(mm)
7.00 − 12 IMP
7.00 − 14 IMP
7.00 − 15 IMP
7.00 − 16 IMP
7.00 − 18 IMP
7.00 − 19 IMP
7.50 − 10 IMP
7.50 − 14 IMP
7.50 − 15 IMP
7.50 − 16 IMP
7.50 − 18 IMP
7.50 − 20 IMP
7.50 − 24 IMP
7.60 − 15 IMP
8 − 16 IMP
8.00 − 6 IMP
8.00 − 12 IMP
8.00 − 16 IMP
8.00 − 19 IMP
8.00 − 20 IMP
8.25 − 15 IMP
8.25 − 16 IMP
8.25 − 20 IMP
9.00 − 10 IMP
9.00 − 13 IMP
9.00 − 15 IMP
9.00 − 16 IMP
9.00 − 24 IMP
10.00 − 12 IMP
10.00 − 15 IMP
10.00 − 16 IMP
10.50 − 16 IMP
5
5
5.5
5.5
5.5
5.5
6
5.5
6
5.5
5.5
5.5
5.5
5.5
6
7
5
6
6
6
6.5
6
6
6
5.5
5.5
6
8
6.5
8
8
6.5
187
170
200
200
200
200
214
194
215
202
202
202
202
193
211
203
214
206
214
214
237
229
229
234
247
247
234
272
262
274
274
280
667
691
744
769
820
845
634
686
808
785
836
887
989
734
795
452
710
808
888
945
835
832
934
696
814
850
848
1,094
790
853
895
955
685
649
801
852
903
1,013
751
305
356
381
406
457
483
254
356
381
406
457
508
610
381
406
152
305
406
483
508
381
406
508
254
330
381
406
610
305
381
406
406

Table 6 (1 of 3)
Agricultural Implement Tyres - Low Section Sizes
Tyre size
Designation
Theoretical
rim width
code (A1)
Nominal section
Width (S1)
(mm)
Overall
Diameter (D)
(mm)
(*)
Nominal rim
Diameter (d)
(mm)
7.5L − 15 IMP
8.5L − 14 IMP
9.5L − 14 IMP
9.5L − 15 IMP
11L − 14 IMP
11L − 15 IMP
11L − 16 IMP
12.5L − 15 IMP
12.5L − 16 IMP
14L − 16.1 IMP
16.5L − 16.1 IMP
19L − 16.1 IMP
21.5L − 16.1 IMP
6
6
7
7
8
8
8
10
10
11
14
16
18
210
216
241
241
279
279
279
318
318
356
419
483
546
745
721
741
767
752
777
803
823
848
940
1,024
1,087
1,130
735
757
782
770
796
821
845
870
1,046
381
356
356
381
356
381
406
381
406
409
409
409
409
Notes: 1. The suffix "IMP" may be replaced by the wording "IMPLEMENT" on the Tyre sidewall
2. Tyres of radial structure are identified by means of the Letter "R" in place of "-"
(e.g. 7.5L R 15).

Table 6 (3 of 3) – Continued
Tyre size
Designation
Theoretical
rim width
code (A1)
Nominal section
Width (S1)
(mm)
Overall
Diameter (D)
(mm)
(*)
Nominal rim
Diameter (d)
(mm)
11.5 − 15.3 IMP
11.5/80 − 15.3 IMP
12.5/80 − 15.3 IMP
12.5/80 − 18 IMP
14.5/80 − 18 IMP
15.5/80 − 24 IMP
17.0/80 − 508 IMP
19.5/80 − 20 IMP
21.0/80 − 20 IMP
5.5/85 − 9 IMP
10.5/85 − 15.3 IMP
13.5/85 − 28 IMP
16.5/85 − 24 IMP
16.5/85 − 28 IMP
9
9
9
9
12
13
13
16
16
4
9
11
13
13
295
290
307
308
372
394
426
499
525
145
274
345
417
417
860
845
889
965
1,060
1,240
1,200
1,300
1,362
475
792
1,293
1,322
1,423
867
987
1,082
1,262
1,344
1,445
389
389
389
457
457
610
508
508
508
229
389
711
610
711
Notes: 1. The suffix "IMP" may be replaced by the wording "IMPLEMENT" on the Tyre sidewall
2. Tyres of radial structure are identified by means of the Letter "R" in place of "-"
(e.g. 205/50R10)
3. Overall diameters (D) in Column (*) apply to tyres marked with classification code 'I-3'
− see Paragraph 3.1.8.2.

Table 7 (2 of 4) – Continued
Tyre size
Designation
Theoretical
rim width
code (A1)
Nominal section
Width (S1)
(mm)
Overall
Diameter (D)
(mm)
Nominal rim
Diameter (d)
(mm)
22 x 8.00 − 10
22 x 8.50 − 12
22 x 10.00 − 8
22 x 10.00 − 10
22 x 11.00 − 8
22 x 11.00 − 10
23 x 8.50 − 12
23 x 9.00 − 12
23 x 9.50 − 12
23 x 10.50 − 12
24 x 8.50 − 12
24 x 8.50 − 14
24 x 11.00 − 10
24 x 12.00 − 12
24 x 13.00 − 12
25 x 7.50 − 15
25 x 8.00 − 12
25 x 8.50 − 14
25 x 10.00 − 12
25 x 10.50 − 15
25 x 11.00 − 12
6
7
7
8.5
8.5
8.5
7
7.5
7
8.5
7
7
8.5
9.5
10.5
5.5
6.5
7
8
8
9
196
216
244
254
284
254
214
229
235
264
213
213
254
304
325
191
203
213
254
267
279
556
551
572
559
546
559
575
575
577
579
602
602
607
610
592
640
635
645
635
640
635
254
305
203
254
203
254
305
305
305
305
305
356
254
305
305
381
305
356
305
381
305

Table 7 (4 of 4) – Continued
Tyre size
Designation
Theoretical
rim width
code (A1)
Nominal section
Width (S1)
(mm)
Overall
Diameter (D)
(mm)
Nominal rim
Diameter (d)
(mm)
48 x 20.00 − 24
48 x 25.00 − 20
48 x 31.00 − 20
54 x 31.00 − 26
66 x 43.00 − 25
66 x 43.00 − 26
66 x 44.00 − 25
67 x 34.00 − 25
67 x 34.00 − 26
67 x 34.00 − 30
68 x 50.00 − 32
VA73 x 44.00 − 32
DH73 x 44.00 − 32
DH73 x 50.00 − 32
15
20.5
26
26
36
36
36
30
30
30
44
36
36
44
457
635
775
775
1,054
1,054
1,118
864
864
864
1,270
1,118
1,118
1,270
1,245
1,245
1,245
1,397
1,702
1,702
1,702
1,727
1,727
1,727
1,753
1,880
1,880
1,880
610
508
508
660
635
660
635
635
660
762
813
813
813
813
Notes:
1.
These Tyres may be classified in categories of use "Tractor Drive Wheels" or
"Implement".
2. Implement Tyres are identified either by suffix "IMP" placed after the Tyre size
designation (e.g. 11 x 4.00 − 4 IMP) or by the word "IMPLEMENT" marked on the
Tyre sidewalls.
3. Tyres of radial structure are identified by means of the Letter "R" in place of "-"
(e.g. 11 x 4.00 R 4).
4. Coefficient "b" for the calculation of the Overall diameter Dmax:
(a)
(b)
1.12 for tyres with Nominal rim Diameter (d) less than 380mm;
1.10 for tyres with Nominal rim Diameter (d) 381mm and above.

ANNEX 6
TEST METHOD FOR MEASURING TYRE DIMENSIONS
1. The tyre shall be mounted on the measuring rim specified by the manufacturer and is inflated to
a pressure specified by the manufacturer.
1.1. To seat the beads do not exceed the inflation pressure marked on the tyre sidewalls.
1.2. Having properly seated tyre beads on the rim, adjust the pressure to the value specified for tyre
measurements.
2. The tyre fitted on its rim is conditioned to the ambient temperature of the laboratory for at least
24h.
3. The pressure is readjusted to the value specified in Paragraph 1.
4. The overall width is measured by calliper at six equally-spaced points, account being taken of
the thickness of the protective ribs or bands. The highest measurement so obtained is taken as
the overall width.
5. The outer diameter is determined by measuring the maximum circumference and dividing the
figure so obtained by π (3.1416).

PART B : STEERING WHEEL TYRES FOR AGRICULTURAL AND FORESTRY TRACTORS
Applicable to Tyres Classified with Category of Use "Tractor Steering Wheels" and
Marked "Front" or "F-1" or "F-2" (see Paragraph 2.21.)
(see Paragraphs 2.30. and 2.31.)
Variation of load carrying capacity (%)
Speed
Speed category symbol
(km/h)
A6
A8
10
+ 50
+ 67
15
+ 43
+ 50
20
+ 35
+ 39
25
+ 15
+ 28
30
[0]
+ 11
35
− 10
+ 4
40
− 20
[0]
45

− 7
PART C : IMPLEMENT TYRES
Applicable to Tyres Classified with Categories of Use: "Implement"
and Marked "IMP" or "IMPLEMENT" (see Paragraph 2.22.)
Speed
(km/h)
Variation of Load Carrying Capacity (%)
(see Paragraphs 2.30. and 2.31.)
Speed category symbol
A4 A6 A8 D (1)
10
+ 20
+ 29
+ 40
+ 80
+ 58
15
+ 12
+ 21
+ 33
+ 73
+ 32
20
[0]
+ 14
+ 26
+ 65
+ 26
25
− 2
+ 7
+ 19
+ 58
+ 19
30
− 5
[0]
+ 12
+ 51
+ 12
35
− 5
+ 5
+ 44
+ 10
40
− 10
[0]
+ 36
+ 6
45
− 5
+ 29
+ 2
50
− 10
+ 21
[0]
55
+ 14

60
+ 7

65
[0]
75
− 9

The above load / speed variations apply when the tyre is not subjected to sustained high torque service.
(1) These percentages apply only in case of tyres listed in Annex 5, Table 7, with nominal rim
diameter (d) 381mm and above, marked with Speed Symbol "B".

ANNEX 8
TEST PROCEDURE
to Assess Tyre Resistance to Bursting
1. PREPARING THE TYRE
1.1. Mount a new tyre on the test equipment. Wheels used for the test shall be suitable to
withstand, with no deformation, the highest value of pressure achievable during the test.
1.2. Carefully centre the tyre beads on the retention device and adjust the outer distance of the
tyre beads to a value corresponding to the width of the rim specified by the manufacturer
pursuant to Paragraph 4.1.10. of this Regulation.
1.3. Fill the tyre with water taking care that all the air inside the tyre is expelled.
2. TEST PROCEDURE
2.1. Activate the apparatus and increase the pressure of the water inside the tyre in order to
reach progressively the limit given by two and half times the pressure specified by the tyre
manufacturer pursuant to Paragraph 4.1.12. of this Regulation;
2.1.1. in no case, however, the limit value shall be lower than 6 bar (600kPa) or higher than 10 bar
(1,000kPa).
2.2. Maintain constant the value of the pressure for at least 10min.
2.3. Decrease, progressively, the pressure of the water to zero and drain the tyre.
2.4. Whilst the pressure of the water inside the tyre is higher than the ambient pressure, nobody
shall stand inside the test room, that shall be safely locked.
3. EQUIVALENT TEST METHODS
If a method other than that described above is used, its equivalence must be demonstrated.

3.3. Apply to test axle a series of masses in accordance with the load/speed test programme
shown in Paragraph 3.4. below, with reference to the test load which equates:
3.3.1. the mass corresponding to load index marked on the tyre in case of tyres marked with
Speed Symbol D.
3.4. Load/speed Test Programme:
Tyre speed
Category symbol
D
test
step
Percentage of the
test load
duration
(hours)
1 66% 7
2 84% 16
3 101% 24
3.4.1. In case of a test drum diameter larger than 1,700mm ± 1%, the above "percentage of test
load" shall be increased as follows:
F = K · F where:
K =
( R / R ) ⋅ ( R + r )
( R + r )
R
R
r
F
F
is the diameter of test drum, in millimetre
is the diameter of the reference test drum of 1,700mm
is the tyre outer diameter (see Paragraph 6.2 of this Regulation), in millimetre
is the percentage of load to be applied for the test drum
is the percentage of load, as per above table, to be applied for reference test drum of
1,700mm
Example:
K = 1 for a test drum diameter of 1,700mm;
In case of a test drum diameter of 3,000mm and a tyre diameter of 1,500mm:
( 3 ,000 / 1,700) ⋅ ( 1,700 + 1,500)
( 3 ,000 + 1,500)
K =
= 1.12
3.5. The tyre pressure must not be corrected throughout the test and the test load must be kept
constant throughout each of the three test steps.
3.6. During the test the temperature in the test room must be maintained at between 20°C and
30°C or at another temperature if the manufacturer so agrees.
3.7. The load/speed test programme must be carried out without interruption.

ANNEX 10
TYRE CLASSIFICATION CODE
(Optional Marking)
Classification
code
F−1
F−2
F−3
G−1
G−2
G−3
I−1
I−2
I−3
I−4
I−5
I−6
LS−1
LS−2
LS−3
LS−4
R−1
R−2
R−3
R−4
Nomenclature
Agricultural tractor steering wheel tyres: single rib tread
Agricultural tractor steering wheel tyres: multiple rib tread
Steering wheel tyres: industrial service (construction application)
Garden tractor tyres (implement tyres): traction service
Garden tractor tyres (implement tyres): flotation traction service
Garden tractor tyres (implement tyres): maximum flotation service
Agricultural implement tyres: multi-rib tread
Agricultural implement tyres: moderate traction service
Agricultural implement tyres: traction tread
Agricultural implement tyres: plough tail wheel service
Agricultural implement tyres: steering service
Agricultural implement tyres: Smooth tread
Logging and Forestry service tyres: regular tread
Logging and Forestry service tyres: intermediate tread
Logging and Forestry service tyres: deep tread
Logging and Forestry service tyres: shallow tread
Agricultural tractor drive wheel tyres: regular tread
Agricultural tractor drive wheel tyres: cane and rice service (deep tread)
Agricultural tractor drive wheel tyres: flotation service (shallow tread)
Drive wheel tyres: industrial service (construction application)

Tyres - Agricultural Vehicles and their Trailers.