Lifted Truck MPH at 3000 RPM with 35-Inch Tires

Calculate how fast a lifted truck with 35-inch tires travels at 3,000 RPM in 4th gear with a 4.10 axle ratio.

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How to use this tool

Enter the engine RPM you want to evaluate.
Enter the overall tire diameter in inches.
Enter the transmission gear ratio for the selected gear and the axle ratio.
The calculator returns vehicle speed in MPH.

Upsizing to 35-inch tires changes your effective gear ratio — use this calculator to see exactly what speed your engine RPM corresponds to.

Frequently asked questions

How do you calculate vehicle speed from RPM?: Speed (MPH) = RPM × tire circumference (in) ÷ (gear ratio × axle ratio × 1,056). The constant 1,056 converts inches/minute to MPH (63,360 in/mile ÷ 60 min/hr).
Why does gear ratio matter for speed?: A lower (numerically higher) gear ratio like 3.73 gives more torque but less top speed than a ratio like 2.73 at the same RPM.