Enter the speed of the vehicle and the tire diameter into the calculator to determine the RPM (revolutions per minute) of the tires. This calculator helps in understanding how tire size affects the RPM at a given speed.
RPM Tire Size Formula
The following formula is used to calculate the RPM of a tire.
RPM = (Speed * 336) / Tire Diameter
Variables:
- RPM is the revolutions per minute of the tire
- Speed is the velocity of the vehicle in miles per hour (mph)
- Tire Diameter is the diameter of the tire in inches
To calculate the RPM of a tire, multiply the speed of the vehicle by 336 and then divide by the tire diameter in inches.
What is RPM in Tires?
RPM, or revolutions per minute, is a measure of how many times a tire completes a full rotation in one minute. It is an important parameter for understanding vehicle dynamics and can affect fuel efficiency, speedometer accuracy, and overall vehicle performance. Tire size can significantly influence RPM; larger tires will have a lower RPM at the same speed compared to smaller tires.
How to Calculate RPM?
The following steps outline how to calculate the RPM of a tire.
- First, determine the speed of the vehicle in miles per hour (Speed).
- Next, determine the diameter of the tire in inches (Tire Diameter).
- Next, gather the formula from above = RPM = (Speed * 336) / Tire Diameter.
- Finally, calculate the RPM of the tire.
- After inserting the variables and calculating the result, check your answer with the calculator above.
Example Problem :
Use the following variables as an example problem to test your knowledge.
Speed of the vehicle (Speed) = 60 mph
Diameter of the tire (Tire Diameter) = 24 inches
