TRA5471 Traxxas Response 3.8" Tires w/Foam Inserts. Response tires are true thoroughbred racing tires.
 The short rectangular spikes offer tremendous traction on hard-packed �blue groove� tracks. The tires are narrower in width to reduce rotating mass and greatly improve acceleration and responsiveness. The soft compound combined with the included foam inserts makes for a winning combination. The total weight savings when the stock tires are replaced with the Response racing tires is 305 grams.