How to change your tyre size

When considering how to change your tyre size and wheel size it is it is important to obtain expert advice.

You must maintain a diameter that is as close as possible to the original so that the gearing of the drivetrain is not adversely impacted. Doing so will also ensure that the ride height will not change significantly. Before changing wheel and tyre size, etyres would recommend checking the guidelines set out by your car manufacturer.

Entering your current and desired new tyre size into the calculator below will enable you to see if this is a viable and safe option. If the percentage difference in diameter is more or less than 2.5%, etyres would not recommend this change.

Current tyre size
Tyre width:
Tyre profile:
Wheel size:
Overall diameter:
New tyre size
Tyre width:
Tyre profile:
Wheel size:
Overall diameter:
Difference in diameter: 0%Actual diameter change: 0mm
We recommend a MAXIMUM of +/- 2.5% difference

 

To buy your new tyres online, simply enter the correct tyre size into the search tool at the top of the page and select the best tyre for your needs. Alternatively, if you would like to discuss changing tyre size or choosing the most appropriate tyre for your needs, you can call our National Sales Team on 0800 028 9000 or 0333 323 9000 at a local rate from a mobile seven days a week.