HPI Racing 4437 Desert Buster Radial Tire HD Compound, 190 x 60mm, 2-Piece HPI Racing Desert Buster Radial Tires are original equipment on the Baja 5T line of 1/5th scale trucks These are front tires that feature a "radial" tread design for stable steering control on a wide variety of surfaces HD Compound is perfect for heavy duty performance with the Baja 5T, it's a formulated rubber blend that resists rips and tears