Diff Ratio Rear End Gear Ratio Chart. 1800 rpm 656 93811 2 73 1 x 130 3 54 1. Calculate rpm for given speed mph rear gear ratio and trans gear ratio.
To find the ideal gear ratio for cruising use your rpm at peak torque. Save yourself the headache and let us figure out your ring and pinion gear ratio. Calculators designed for the auto enthusiast.
Tire specifications have a three number format 275 75r16.
Select the value you want to solve for. Figuring rearend gear ratio ring pinion formula. This calculator assumes you know the vehicle s transmission ratio. This calculator will provide the speed of the vehicle based on the transmission gear ratio the engine rpm the tire height and the ring gear and pinion gear ratio in the rear end axle differential housing.