Tyre Size Calculator

Get your wheels right

Changing your wheel size isn’t as simple as you might think. Before doing so you need to make sure that the new tyres you want on your ride will actually fit.

Use the calculator below as a guide to see if you’ve got a good fit.

To compare the size of your current tyres with the ones
you are looking to have fitted just enter your tyre
information below and then compare it with the
tyres you are thinking about purchasing. Hit
“Calculate” and you’ll get a quick comparison
of the two tyre sizes.

select OLD tyre size

select NEW tyre size

Results

Old Tyre Size

Imperial Metric
Section Width
Rim Diameter
Overall Diameter
Sidewall Height
Actual Speed
Speed Variance -
Diameter Variance -

NEW Tyre Size

Imperial Metric
Section Width
Rim Diameter
Overall Diameter
Sidewall Height
Actual Speed
Speed Variance - -
Diameter Variance - -
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