Set limits: Cup: 3 sets for practice, 1 set for qualifying/start of race and 9 sets for race (8 race sets plus 1 set transferred from qualifying or practice); Truck: 5 sets for the event
Tire Codes: Left-side — D-4588; Right-side — D-4722
Tire Circumference: Left-side — 2,221 mm (87.44 in.); Right-side — 2,251 mm (88.62 in.)
Minimum Recommended Inflation: Left Front — 10 psi; Left Rear — 10 psi; Right Front — 23 psi; Right Rear — 22 psi
Storyline – Rubbering-in concrete corners at Martinsville is key: For the Monster Energy NASCAR Cup race at Martinsville Speedway this weekend, the combination of the concrete racing surface in the corners and cool temperatures form a challenge. Concrete behaves differently than asphalt, with the density of the surface making it more challenging for the rubber to continuously adhere to the track. Since it is also true that cooler temperatures make it more difficult to lay rubber, Goodyear has designed a right-side tread compound for Martinsville to address that. The track taking rubber improves racing by opening up multiple racing grooves and creating more side-by-side racing, even on the tight corners at the half-mile track. Goodyear’s tire set-up also features constructions that work well to optimize the acceleration, deceleration and cornering required on Martinsville’s tight turns and long straightaways.
"It’s getting later in the fall and we are likely to have cloudy conditions and temperatures in the 60-degree range at Martinsville this week, so track temps will be low, making it more difficult for the track to take rubber," said Greg Stucker, Goodyear’s director of racing. "Because of the time of year we run at Martinsville, we’ve worked hard over the past several years to come up with a tread compound that will lay rubber in the concrete corners, even in cool temperatures. Generally, Martinsville has produced some of the best racing on the circuit and that only seems to have been enhanced by the track consistently taking rubber and having multiple racing lines. We continue to work on keeping up with Martinsville and making adjustments where needed, holding a test there this past summer and looking ahead to 2020 when we will have a full fledged night race at the track."
Notes – Cup, Truck teams return to Martinsville on successful Goodyear tire set-up: Teams in both the Monster Energy NASCAR Cup Series and NASCAR Gander Outdoors Truck Series will run the same tire set-up at Martinsville this weekend . . . this is the same tire set-up these teams have run at this track since 2017 . . . this is the only track at which NASCAR teams will run either of these two tire codes . . . this tire set-up was confirmed at a recent test at Martinsville (July 30-31) . . . teams (drivers) that participated in that test were Penske Racing (Ryan Blaney), Stewart-Haas Racing (Clint Bowyer) and Wood Brothers Racing (Paul Menard) . . . as on most NASCAR ovals one mile or less in length, teams will not run inner liners in their tires at Martinsville.