The number of revolutions a tire makes in 1 mile depends on the circumference of the tire. To find the tire circumference, which is the distance traveled in one revolution, multiply the tire diameter in inches (measured from opposite sides of the tire through its midpoint) by pi.Continue Reading
There are 63,360 inches in 1 mile. This is found by multiplying the number of feet in a mile, 5,280, by the number of inches in a foot, 12. To find the number of tire revolutions in a mile, divide 1 mile in inches by the tire circumference.
For example, a tire with a 22-inch diameter has a circumference of 69.08 inches. The tire makes about 917 revolutions per mile.Learn more about Tires, Rims & Wheels
Car tires may squeal for a number of different reasons, including under-inflation, extreme tire wear and poor wheel balance. Proper tire maintenance can alleviate squealing.Full Answer >
Every tire has a Department of Transportation number, beginning with DOT, on one sidewall. As of April 2015, the first two digits or letters reveal the tire manufacturer. For tires manufactured after January 1, 2000, the last four digits of the number identify the week and year it was manufactured.Full Answer >
Look for deep tire treads, a tire identification number on the sidewall, smooth sidewalls and lack of bumps in the tread area. Inspect the tires for any signs of damage, including irregular wear patterns, exposed steel cords or missing chunks of rubber.Full Answer >
The first three-digit number on the sidewall of a tire refers to the tire's width in millimeters. An example is P215/65R1595H. The tire is 215 millimeters wide and fits vehicles with a wheel diameter of 15 inches. The letters and numbers are in a specific order, according to Goodyear.Full Answer >