Vehicles & Transport calculator
What Tyre Size Fits My Wheel?
Enter tyre nominal section width, wheel rim width, and tyre maker minimum rim width to work out tyre-to-wheel width compatibility.
Enter your measurements
This page is built for one question: what tyre size fits my wheel? Supply tyre nominal section width, wheel rim width, and tyre maker minimum rim width, then use the returned tyre-to-wheel width compatibility to screen unsuitable options.
- Tyre nominal section width — Required
- Wheel rim width — Required
- Tyre maker minimum rim width — Required
- Tyre maker maximum rim width — Required
Tyre-to-wheel width compatibility
Enter the measurements above to calculate tyre-to-wheel width compatibility.
How the calculation works
V14 calculation: widthPass=minApprovedRimWidth≤rimWidth≤maxApprovedRimWidth; return tyreSectionWidth,rimWidth,minApprovedRimWidth,maxApprovedRimWidth,widthPass. This is the implementation specification for this calculator.
Worked example
Example: Tyre nominal section width = 60 cm; Wheel rim width = 17.8 cm; Tyre maker minimum rim width = 16.5 cm; Tyre maker maximum rim width = 19.1 cm. Result: Width Pass = Pass. Final labelled size/compatibility must be checked against the exact current manufacturer, brand or governing-body chart.
Before you decide
Measure the actual item, opening or body dimension involved. Use the current manufacturer, brand, league or governing-body specification for the final labelled size or rule; those external charts can change and are not treated as universal constants. For what tyre size fits my wheel, the limiting result on this page is tyre-to-wheel width compatibility.
Runtime-specific source required. Use the exact current manufacturer, brand, model, regional conversion, league or governing-body chart/rule that applies to the user's actual product or competition; a single static URL would be misleading.
Frequently asked questions
What does the Tyre Size Fits My Wheel calculator tell me?
It returns tyre-to-wheel width compatibility from the measurements entered on this page. The calculation is specific to tyre size fits my wheel, so the result should be compared with the exact product or specification you are considering.
Which measurements should I take for tyre size fits my wheel?
Measure tyre nominal section width, wheel rim width, tyre maker minimum rim width, tyre maker maximum rim width. Use clear, usable dimensions rather than nominal room or product labels.
Should I round the tyre-to-wheel width compatibility?
Keep the calculated value for comparison, then choose a real product that meets or stays within the returned tyre-to-wheel width compatibility while allowing for the clearances, tolerances or ratings shown by its manufacturer.