These examples are starting points only. Use the calculator to check rolling diameter difference and speedometer impact.
| Current size | Alternative size | Why people compare it |
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The calculator starts with the common size for this vehicle. Change the values to match your exact setup.
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Current size
-Overall diameter
-Sidewall height
-Rolling circumference
-Alternative tyre sizes
Closest matches are ordered by rolling diameter difference.
0 matches
Compare current and proposed tyre sizes
Check diameter, circumference, sidewall and speedometer differences.
Comparison results
Compare an existing tyre size against a proposed replacement.
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Helpful tyre size guides
Use these guides to understand the checks behind tyre size changes.