RPM you wish to check		Rear Axle Gear ratio (i.e., 3.08, 3.55, etc.)
Transmission Gear ratio (i.e., 2.54, 1.43, 1.00, etc.)		Tire diameter in inches (24.5, 26, 27.5, etc.)

The speed is MPH. The same tire and RPM will give the following speeds
based on the following gear ratio changes.

2.59	2.73	3.08	3.36	3.55	3.70	4.11	4.56