TRA5375 Traxxas Response Pro 3.8" Tires w/Foam Inserts. The Response Pro tires are the ultimate in off-road racing performance. A taller profile increases side bite and offers better bump handling, while the new tread design and ultra-soft compound stick to the track surface.
 The outside row of spikes are contoured to provide just the right amount of side bite for smooth, predictable turn-in. The new Response Pro racing tires come equipped with race-tuned foam inserts.