Whether you are racing on indoor clay or asphalt, rubber-tire traction can be one of the main keys to winning. Liquid Wrench (in the yellow can) makes an excellent yet inexpensive tire-traction compound. Just spray liberally onto the tires or onto a towel, rub in, and wait. By the time they call your heat, your rubber tires will be nice and sticky, and the large quantity allows for many race days.
Article Credit: Radio Control CarAction www.rccaraction.com/