GOODYEAR TIRE NOTES
NASCAR Sprint Cup Series -- Race No. 7 – Duck Commander 500
NASCAR Nationwide Series -- Race No. 6 – O'Reilly Auto Parts 300
Texas Motor Speedway (1.5-mile oval) – Fort Worth, Tex.
Fast Facts for April 3-6, 2014
Tire: Goodyear Eagle Speedway Radials
Set limits: Sprint Cup: 5 sets for practice/qualifying and 11 sets for the race;
Nationwide: 7 sets for the event
Tire Codes: Left-side -- D-4392; Right-side -- D-4618
Tire Circumference: Left-side -- 87.4 in. (2,220 mm); Right-side -- 88.5 in. (2,247 mm)
Technical Inspection Inflation: Left Front -- 30 psi; Left Rear -- 30 psi Right Front -- 50 psi; Right Rear -- 47 psi
Minimum Recommended Inflation: Left Front -- 23 psi; Left Rear -- 21 psi; Right Front -- 51 psi; Right Rear -- 47 psi
Notes: Teams in both the NASCAR Sprint Cup and Nationwide Series will run the same Goodyear tire codes at Texas this weekend . . . this is the first time teams will run this right-side tire code (D-4618) . . . this right-side tire employs Goodyear's multi-zone tread technology, which combines two distinct tread compounds on the same tire . . . the outside 10 inches of the tread features a compound that is designed for grip, while the inside two inches of the tread is toughened to enhance durability on the part of the tire sees the most heat and takes the most abuse . . . these teams have run this left-side tire code (D-4392) at Texas since 2011 . . . this left-side code was also run by these teams at Chicagoland, Darlington and Homestead in 2013 . . . as on all NASCAR ovals greater than one mile in length, teams are required to run inner liners in all four tire positions at Texas . . . air pressure in those inner liners should be 12-25 psi greater than that of the outer tire.