All-Tyre Service Centre
Tyre identification - The writing's on the wall
Tyre Sidewall

The writing and symbols on the sidewall of your tyre can tell you a great deal about the tyre itself, such as what weight it can carry and its maximum speed.
This helpful guide will show you what’s what, so that you can read the writing on the wall.
The writing on the sidewall of your tyre is like a specification sheet - it tells you everything you need to know about the tyre.
This information includes details of the tyre’s country of origin, size, speed rating, type approval, load capability, model number and much, much more.


Of course, some of this data is stuff only a tyre technician will find useful, but there are several details you will find handy too.


Let's use the Michelin MXV3A 175/65R14 82H shown as an example

MXV3A

- The Michelin pattern name.


175

- The nominal section width of the tyre in millimetres.

65

- The aspect ratio of the tyre, (the ratio between the section height and section width).

R

- Radial construction. Most car tyres sold in UK are radial except for certain special tyres such as space saver spares.


14

- The diameter of the rim shown in inches.

82

- The load capacity of the tyre shown as an index. which should be looked up on the load index table below. In this case the load capacity of the tyre at the correct inflation pressure is 475kg.

H

- The speed symbol, i.e. the maximum sustainable speed for the tyre at the load capacity given - in this case 130mph. View the Speed symbol Table below.



Steel Belted Radial

- as with the letter "R", this refers to the tyres construction. "Steel Belted" is a particular form of radial construction.



DOT

- the type approval mark of the American Department of Transport, showing that our tyres have passed their strict testing procedures.
When a tyre has passed both the American and European test programmes, you know you can have complete faith in it.

AB7C DEF267

- this is the tyre's production code marking, an internal code that allows us to determine exactly where and when a tyre was made.

E11 01234

- the ECE type approval mark and number, showing that the tyre have been tested and passed as high-quality by the European regulatory authorities.



Made in Great Britain

- the country where the tyre was made.

 

LOAD INDEX TABLE
Load Index Kilograms Load Index Kilograms Load Index Kilograms
65 290 80 450 95 690
66 300 81 462 96 710
67 307 82 475 97 730
68 215 83 487 98 750
69 325 84 500 99 775
70 335 85 515 100 800
71 345 86 530 101 825
72 355 87 545 102 850
73 365 88 560 103 875
74 375 89 580 104 900
75 387 90 600 105 925
76 400 91 615 106 950
77 412 92 630 107 975
78 425 93 650 108 1000
79 437 94 670    


SPEED SYMBOL TABLE
Speed Symbol Approx MPH Approx KPH
Q 99 160
R 106 170
S 112 180
T 118 190
H 130 210
V 150 240
ZR 150+ 240+
W 168 270
Y 186 300
     

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