Finally released the new RC4Less 1/12 foam tires. We have done our homework on these tires and you will immediately see the quality. Not another knock-off, not another copy cat, not another repackage of someone else’s products. From top to bottom these tires are exclusive to RC4Less. Furnishing the highest quality tires for RC Racers was our first criteria. Then taking this quality and making it affordable. Our “R” series foam is Natural Rubber foam with a higher rubber content which is excellent for racing on low bite carpet tracks and outdoor asphalt and concrete surfaces. Durometer ratings are indicated with each compound designation. Diameter is 2" (50.2mm) Front wheesl accept standard 1/8 x 5/16 and 3/16 x 5/16 FLANGED Bearings.