This calculator helps you convert from metric to/from imperial tyre sizes.
For example, 35 x 12.5 x R17 is imperial, and the metric size equivalent is 315 / 70 / R17 – and the tyres are almost identical in size. But the systems are very different, so it’s hard to compare the two sizes.
And yes, in the “metric” format the rim diameter is still in inches! If you need a refresher on tyre sizing, check out the Tyre Help page.
No results to display - select a conversion option and tyre size, then click Calculate
The measurements here are calculated from the general tyre specs. The tyre you want may not be available in those sizes. Also, in practice, actual sizes will vary a little from these measurements, particuarly offroad tyres which have deep tread. Check the exact specs for your selected tyre in your selected size.