All three NASCAR national series are in action this weekend at Texas Motor Speedway. Teams in all three series will use the same tires codes.
Sprint Cup teams will be given five sets of tires for practice and qualifying and 12 sets for the AAA Texas 500.
Xfinity Series teams will be given eight sets of tires for the weekend. Camping World Truck Series teams will be given six sets.
Tire Codes: Left-side -- D-4684; Right-side -- D-4686.
Tire Circumference: Left-side -- 87.24 in. (2,216 mm); Right-side -- 88.35 in. (2,244 mm).
Minimum Recommended Inflation (Sprint Cup): Left Front -- 19 psi; Left Rear -- 19 psi; Right Front -- 53 psi; Right Rear -- 49 psi.
Minimum Recommended Inflation (Truck): Left Front -- 21 psi; Left Rear -- 19 psi; Right Front -- 53 psi; Right Rear -- 49 psi.
Teams in all three series ran this same tire setup at Chicagoland earlier this season and will run it again at Homestead in two weeks. In both the Sprint Cup and Truck Series, this is the same combination of left and right-side tires they ran at Texas earlier this season.
This right-side tire code (D-4686) employs Goodyear’s multi-zone tread technology, which combines two distinct tread compounds on the same tire -- the outboard 10 inches of the tread (Traction Zone) features a compound that is designed for grip, while the inboard two inches of the tread (Endurance Zone) is toughened to enhance durability on the part of the tire sees the most heat and takes the most abuse.
As on all NASCAR ovals larger than a mile in length, teams are required to run inner liners in all four tires at Texas. Air pressure in those inner liners should be 12-25 psi greater than that of the outer tire.
