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How to Read Your Tyre Size

What the numbers and letters on your tyre sidewall mean, and where to find them.

By Telford Tyres ·

Where to find your tyre size

Your tyre size is printed on the sidewall of every tyre. You can also often find the recommended size inside the driver’s door frame, inside the fuel filler flap, or in your vehicle handbook.

The quickest way to get a tyre quote from us is to send a photo of the tyre sidewall on WhatsApp.

What 205/55 R16 91V means

PartMeansExplanation
205WidthThe width of the tyre in millimetres.
55Profile (aspect ratio)The sidewall height as a percentage of the width.
RConstructionRadial construction – almost all modern car tyres.
16Rim sizeThe diameter of the wheel the tyre fits, in inches.
91Load indexThe maximum load each tyre can carry (91 = 615kg).
VSpeed ratingThe maximum speed the tyre is designed for (V = 149mph).

Do I have to match the load and speed rating?

Replacement tyres should have a load index and speed rating at least as high as the vehicle manufacturer specifies. Fitting a lower rating can affect safety and your insurance. We will always check this for you before fitting.

Need help with your tyres?

Visit our Telford shop or call our 24/7 mobile tyre fitters.

07854 360918

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