Tire - Desert Race Baja - Rear - 140/80-18 - 70R Reinforced tread blocks and optimized architecture deliver increased traction in soft terrain, and a 500g weight reduction in unsprung mass d to the Michelin? Desert Race tire, Directional V-shaped central knobs maximum traction in deep sand while knob radius and angles deliver maximum braking support, More grip and support in deep soft grounds, Knobby rear tire provides tremendous high-speed stability in sandy conditions, More void ratio tread pattern, Softer architecture