Tire Contact Patch Calculator

Calculate the tire contact patch area based on tire load, inflation pressure, and tire dimensions.

Input Parameters

Results

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Contact Patch Area
in²
--
Contact Length
in
--
Contact Width
in
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Avg Ground Pressure
psi
Note: Larger contact patches improve grip but increase rolling resistance. Race tires use wider, softer compounds for maximum patch area. Low pressure increases patch but causes uneven wear.

Reference

Contact Area ≈ Tire Load / Inflation Pressure Contact Width ≈ Section Width × 0.85 (tread width) Contact Length = Area / Contact Width Avg Ground Pressure = Load / Contact Area