Used on any rubber tire. This blend will softened tires. The more coats applied the softer they will be. Two to three days max is usually plenty with 2-3 coats daily. Bag each time it is applied and when you’ve reached desired softness wipe thoroughly. Once they are soft enough for your liking, use PRP tire sauces and cleaner to keep them performing at the track. Side note, it smells like candy!