How to Read Your Tyre Size
The side wall of a tyre holds a lot of information, and it can be hard to distinguish which parts you need when you order new tyres . Our handy guide below shows you where each piece of information is located.
- 1
Manfacturer's name or Brand Name - 2 Model or Pattern Code
- 3 Tyre Size: Nominal Section width (mm), height to width aspect ratio, Rim diameter
- 4 Service description (Load index + Speed Symbol)
- 5 ECE R30 Conformity Approval Number
- 6 EEC Noise Approval Number
- 7 USA Dept. of Transport Manufacturer's code
- 8 Date of manufacture
- 9 USA UTQG Quality Grades **
- 10 USA Maximum Tyre Loading **
- 11 USA Maximum Tyre Inflation Pressure **
- 12 Denotes
Tubless Construction - 13 Safety Warning
- 14 Direction of rotation (Directional
tyres only) - 15 Outer (inner) sidewall (Asymmetric
tyres - 16 Extra Load: denotes higher load capacity than standard
tyre - 16a 'Reinforced' is an alternative marking to 'Extra Load'
- 17 TWI-tread
wear indicators - raised areas at the base of the tread grooves to serve as a visual warning of when thetyre is approaching or at the minimum legal limit.
** These markings are required by North American legislation and have no significance in the UK & Europe