Set of 4 AKA Racing 1/8 Buggy Gridiron Tires- Medium Compound- AKA14003MX 2 Pairs of Tires- 4 Tires Total- No Inserts Tread Performance- Computer Designed - Track Tested Lifespan: AKA tire long lifespan 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