Extra smooth wear, Extra traction, Extra Scale!Mini rib sipes for absorbing rib edge stressesScale tread patternSuperior tract tractionion wetOuter Diameter: 3.28" (83.5mm)Width: 0.87" (22mm)Inner Diameter: 1.71" (43.5mm)Advanced X6 compound* Fit all RC4WD & Tamiya Tractor Semi Truck wheels