IRC Vx40 Tires Vx40 Tires from IRC deliver an optimized knob spacing for a bigger contact patch with the ground. The VX40s offer better grip and handling in intermediate to hard pack on trails or groomed tracks. New rubber compound balance both performance as well as durability. For a highly stable, highly flexible ride, the Vx-40 Tires are constructed with a lightweight two-ply + breaker ply casing. Features: Designed for intermediate to hard terrain Optimized knob spacing for increased contact patch Revised rubber compounds balance grip and durability Constructed with a lightweight 2-ply + breaker ply casing for high stability and flexibility Tt/Tl design Need your tire mounted Weve got you covered! Tire Mount Discount