How to Read a Tyre Sidewall: Decoding the Numbers and Letters
The numbers and letters on your tyre sidewall contain everything you need to know about your tyre. Learn to decode them in just 5 minutes.
James Carter
7 February 2026
Run-flat tyres let you keep driving after a puncture, but they come with trade-offs. Find out if run-flat tyres are the right choice for your vehicle.
Run-flat tyres are designed to remain functional even after losing air pressure, typically allowing you to drive at reduced speeds for up to 80km. They're becoming increasingly common as a spare wheel replacement in modern vehicles.
Run-flat tyres have reinforced sidewalls that support the vehicle's weight even when the tyre is completely deflated. This allows you to drive to a safe location or tyre fitting service without stopping at the roadside.
If you drive a BMW, Mercedes, or other vehicle that came with run-flats as standard, replacing like-for-like is the safest option. For other drivers, the decision depends on your priorities. Eddie's Mobile Tyres can advise on the best tyre type for your specific vehicle.
Eddie's Mobile Tyres comes to you — at home, work, or roadside. Same-day appointments available across the UK.
The numbers and letters on your tyre sidewall contain everything you need to know about your tyre. Learn to decode them in just 5 minutes.
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