Speed Calculator

Calculate speed based on RPM, transmission ratios, rear end gearing, and tire size.
Tire Size
265 75R22.5
265 75R22.5
265 75R22.5
-OR-

Select from one of these tire sizes

Transmission Gearing

Gear Ratios

-OR-

Select from one of these transmissions

Axle Ratio & Engine RPM

Rear Axle Ratio

-OR-

Select from one of these axle ratios

Engine RPM

Vehicle Details & Options
(OPTIONAL)
This should be the actual weight, not GVWR.

Options