Based in Germany, Overdrive produce high quality Tire Truers and parts featuring a modular design to accommodate various slot car applications. Overdrive Tire Truers feature the ability to true tires while still on the original axles, as well as with removeable wheels. The Overdrive Tire Truer works with rubber, urethane, sponge / foam, and silicone tires; and is compatible with a variety of popular slot car brands.