Tyre Size Calculator

Compare original vs. new tyre dimensions

calczen.com

1 Original Tyre

Width (mm)

Aspect Ratio (%)

Rim Diameter (inches)

2 New Tyre

Width (mm)

Aspect Ratio (%)

Rim Diameter (inches)

Diameter Diff

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Percentage

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Recommendation

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Speedometer Impact

When your speedometer reads 60mph, your actual speed will be approximately ...

Formula used: rim + (width * aspect/100 * 2) / 25.4