I am trying to figure out a math formula:

How many times does a tire rotate per minute at 10 mph?

If the tire is 28 inches in diameter, it has a 87.92 inch circumference: 28 x 3.14 = 87.92

There is 5280 feet in 1 mile, and 63360 inches in 1 mile: 5280 X ... Login to read more.