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. The HD Compound is perfect for heavy duty performance with the Baja 5T, it's a formulated rubber blend that resists rips and tears, developed for extreme driving conditions. Note: Inner foams must be purchased separately. Part # Hpi4437