$18at TraxxasBuyTraxxasTIRES SPKED 2.2 REAR SFT CMPND$18Traxxas$18BuySaveShareTraxxas profileThe creators who use it, or GearCred, may earn a commission when you buy through these links, at no extra cost to you.From TraxxasTires, Pro-Trax spiked 2.2" (soft-compound)(rear) (2)/ foam inserts (2)