A free program for Android, by Aimen RG.

The most comprehensive tire comparison tool and size calculator on the store. Suitable for Cars, SUVs, 4x4s, Buses, Trucks, ATVs, and Bikes.

The most accurate and easy to use tool to calculate the tire size of your car, bike, or other vehicles.

To use the app, you need to connect your phone to your car, bike, or other vehicle. You will then be able to use the app to calculate the tire size. 

The app is very easy to use, and you will only need to input the vehicle speed in km/h and the distance in km. The result will then be displayed for you in seconds.