Goodyear Fast Facts -- Texas

Monster Energy NASCAR Cup Series -- Race No. 7 - O'Reilly Auto Parts 500
NASCAR Xfinity Series - Race No. 6 - My Bariatric Solutions 300
Texas Motor Speedway (1.5-mile oval) - Fort Worth, Tex.
Fast Facts for April 6-8, 2018

Tire: Goodyear Eagle Speedway Radials

Set limits:
Cup: 4 sets for practice, 1 set for qualifying and 9 sets for race;
Xfinity: 7 sets for the event

Tire Codes:
Left-side -- D-4770;
Right-side -- D-4718

Tire Circumference:
Left-side -- 2,227 mm (87.68 in.);
Right-side - 2,251 mm (88.62 in.)

Minimum Recommended Inflation:
Left Front -- 22 psi; Left Rear -- 22 psi;
Right Front -- 52 psi; Right Rear -- 50 psi

Storyline - Goodyear tests Texas, tackles challenges: The track surface at Texas Motor Speedway is still relatively young, having been repaved right before the 2017 season. Repaves create a racing environment that poses several challenges - (1) fresh asphalt has a lot of grip, which generates a lot of speed and heat in the tires, (2) because the new surface is very smooth, it doesn't allow the opportunity to cause the tires to shed rubber, which could also cause heat problems, and (3) because little rubber gets worked into the track, it is harder to create multiple racing grooves. Goodyear held a tire test at Texas this past January and developed a new left-side tire that not only incorporates a construction update that is being rolled into many speedways this year, but also features a compound change to introduce more wear and, therefore, dissipate more heat.

"We had a good test at Texas and we were able to address some of the challenges that all repaves present," said Greg Stucker, Goodyear's director of racing. "This being just the third NASCAR Cup race since the repave, the track surface has not really had the chance to weather in, so to speak. This new left-side tire matches up well with this still smooth surface and will accomplish our goal of increased wear and laying rubber on the track. That should lead to a increased level of fall-off over the course of a fuel run and a widened racing groove."

Notes - New left-side tire debuts at Texas: Teams in both the NASCAR Cup and Xfinity Series will run the same tire set-up at Texas this weekend . . . while teams in both of these series ran this right-side tire code (D-4718) twice at Texas last season, this is a new left-side code (D-4770) . . . this tire combination came out of a Goodyear test at Texas on January 9-10. . . drivers participating in that test were Aric Almirola, Ryan Blaney, Chase Elliott and Martin Truex Jr. . . . compared to what was run at this track last year, this left-side tire features a construction update to line it up with what is run at other speedways (similar to what was done three weeks ago at Fontana) and a compound change to introduce more tire wear and fall-off . . . as on all NASCAR ovals greater than one mile in length, teams are required to run 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.