This tool calculates your in-gear speeds based on your tyre size, gear ratios and final drive ratio. Optionally add 2 sets of data and compare results in a table or as a graph. Great for seeing what a different gearbox or final drive will do for your car!

Features preset gear and final drive ratios with the option to add your own. Any settings added by any user of the application will be uploaded to a web server and distributed with future releases of the application.