Gear Ratio Adjuster: Maintain performance after changing tire size (for 4×4/off-road).

4×4 Gear Ratio Calculator

Calculate the optimal gear ratio for your tire size change

Gear Ratio Visualization Original Tire New Tire Differential
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Original Tire
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New Tire
Please enter a valid tire size
Please enter a valid gear ratio
Please enter a valid tire size
Recommended Gear Ratio: —
RPM Difference: —
Speed Impact: —

Note: Results are approximate. Consult with a professional mechanic for final gear selection. This calculator helps estimate the ideal gear ratio when changing tire sizes to maintain optimal vehicle performance.