Set limits: Cup: 3 sets for practice, 1 set for qualifying and 9 sets for the race; Xfinity: 6 sets for the event;
Tire Codes: Left-side — D-4860; Right-side — D-4862
Tire Circumference: Left-side — 2,223 mm (87.52 in.); Right-side – 2,251 mm (88.62 in.)
Minimum Recommended Inflation: Left Front — 20 psi; Left Rear — 18 psi; Right Front — 43 psi; Right Rear — 40 psi
Storyline - Short track/speedway mash-up at Bristol: There are two important factors at Bristol – (1) it is a short track that actually races like a speedway, and (2) its concrete surface. The steep banking and speeds seen at Bristol are certainly not characteristic of most short tracks. As a result, the tire set-up must be able to handle the loads generated while optimizing handling. As for the concrete, the tread compounds Goodyear brings to Bristol are designed to lay the appropriate amount of rubber down on the smooth surface.
"While Bristol is only a half-mile in length, it races very much like a speedway," said Greg Stucker, Goodyear’s director of racing. "The steep banking generates a lot of speed and a high amount of loading, even more so with the 2019, high downforce rules package. The tire set-up that we bring takes that into account while enhancing the stability and handling of the cars through the corners. The other factor at Bristol is the concrete track surface. It is important to lay rubber down on the surface and create the opportunity for teams to use all three lanes. There will be a four-foot-wide line of the PJ1 grip compound laid down in the bottom lane in the corners, so that application and subsequent wearing off of the compound will change racing throughout the weekend and keep it exciting for the fans as drivers potentially move around the track to find maximum grip."
Notes - New tire set-up for Cup and Xfinity at Bristol: Teams in both the NASCAR Cup and Xfinity Series will run the same Goodyear tire set-up at Bristol this week . . . this is the first time these teams have run either of these two tire codes . . . compared to what was run at Bristol last year, this tire set-up features construction updates on both sides of the car and a compound change on the left-side . . . this is the only track at which NASCAR teams are scheduled to run either of these two tire codes . . . unlike on most NASCAR ovals one mile or less in length, on which teams generally do not run inner liners in their tires, teams are required to run liners in their right-side tires only at Bristol . . . air pressure in those inner liners should be 12-25 psi greater than that of the outer tire.
Upcoming Tire Test – Goodyear to visit Dover next week: Goodyear will hold a tire test at Dover International Speedway next Tuesday (April 9) . . . teams (drivers) scheduled to participate are Richard Childress Racing (Austin Dillon), Chip Ganassi Racing (Kyle Larson) and Roush-Fenway Racing (Ricky Stenhouse Jr.).