AKA Products 14013SX Racing Buggy Gridiron II Soft No Inserts Tire, Scale 1:8 Tread Performance - Each tire tread is computer designed and track tested by AKA engineers Lifespan: The long life of the AKA tires is due to the collective decades of rubber compound development Balance: Like AKA inserts and wheels, tire balance is critical to superior performance and it's a priority in AKA tires Mold Accuracy: AKA tire molds are made in the U.S.A. using the most advance mold-making techniques and processes available