The numbers on a tyre sidewall look like code, but they follow a simple pattern. Knowing how to read them makes getting an accurate quote much easier.
The main size
A typical marking such as 205/55 R16 means a tyre 205mm wide, with a sidewall height 55% of that width, a radial construction (R) and a fit for a 16 inch wheel.
Load index
The number after the size, for example 91, is the load index. It corresponds to the maximum weight the tyre can carry. 91 means 615kg per tyre.
Speed rating
The letter after the load index shows the maximum speed the tyre is built for. V, for example, is rated to 149mph. Replacement tyres should never be lower than the manufacturer's rating.
Other markings
XL or Reinforced means a stronger construction, M+S or the three-peak snowflake symbol means winter suitability, and a small DOT code shows the week and year of manufacture.
Where to find the right size
Check the sidewall of a fitted tyre, the driver's door pillar or the fuel flap, or the handbook. Or give us your registration and we'll confirm it.
Common questions
Can I fit a different size to the one on my car?
Only within what the manufacturer allows. A wrong size can affect the speedometer, handling and safety.
What does XL mean on a tyre?
Extra Load: the tyre has a reinforced construction and can carry a higher load at the same pressure.
Do I have to match brands front and rear?
Not required, but keeping the same type on an axle is important. We can advise on a sensible set.
Can you tell me the size from my registration?
Yes. Give us the registration when you call and we'll confirm the correct size before you order.