Ground Clearance Difference Calculator

How much ride height changes when switching from one tire size to another.

Formula

Ground clearance difference = [Diameter(New) − Diameter(Current)] / 2

Assumptions

How much ride height changes when switching from one tire size to another.

How to read it

Ride height changes by half the diameter difference: +20 mm of diameter = +10 mm under the car. A modest-looking gain also shifts seat height, headlight aim and fender clearance under suspension compression.

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