Tire: Goodyear Eagle Superspeedway Radials
Set limits: Busch Clash: 6 sets for the event; Daytona 500: 8 sets for practice/qualifying/Duel, and 8 sets for the race (7 race sets plus 1 set transferred from qualifying or practice); Xfinity: 4 sets for the event; Gander RV & Outdoors Truck: 4 sets for the event
Tire Codes: Left-side — D-4888; Right-side — D-4890
Tire Circumference: Left-side — 2,232 mm (87.87 in.); Right-side — 2,250 mm (88.52 in.)
Minimum Recommended Inflation: Left Front — 26 psi; Left Rear — 26 psi; Right Front — 50 psi; Right Rear — 48 psi
Storyline – Mechanical grip important in Daytona’s "dirty" air: In superspeedway-style racing, being within inches of other cars all the way around the track is a reality, and enhanced stability is welcome to combat the buffeting of the air caused by that close-quarters racing. Goodyear refined its tread compounds on both sides of the car to offer more grip at Daytona in July 2017, and then updated the constructions on both sides to be more like what is run at intermediate tracks last July. Teams in the Cup Series were the only ones on this tire set-up in July 2019, but now teams in all of NASCAR’s top three series will be on that same set-up over the next two weeks.
"Building the right amount of mechanical grip into the tires adds the needed stability with the tight racing we have here at Daytona," said Greg Stucker, Goodyear’s director of racing. "We fine-tuned the tread compounds for here back in 2017 and then had a good test right after last year’s Daytona 500, which led us to updating the constructions as well. Those constructions introduced a little more stagger into this tire set-up, and that will also enhance the handling through the corners."
Notes – Cup cars return on July ’19 tire set-up, Xfinity/Trucks get construction updates: Teams in all of NASCAR’s top three divisions will run the same tire set-up at Daytona throughout Speedweeks . . . this is the same combination of left- and right-side tires that NASCAR Cup Series teams ran at Daytona last July . . . this is the first time Xfinity and Gander RV & Outdoors Truck Series teams have run either of these two Goodyear tire codes . . . compared to what Xfinity and Truck teams ran at Daytona in 2019, both this left- and right-side tire feature construction updates . . . as on all NASCAR ovals greater than one mile in length, teams are required to run inner liners in all four tire positions at Daytona . . . air pressure in those inner liners should be 12-25 psi greater than that of the outer tire.
Goodyear Blimp – Airship to cover week two at Daytona: The Goodyear Blimp "Wingfoot Two" is scheduled to be in the air over Daytona International Speedway during the second week of Speedweeks . . . Wingfoot Two, based out of Pompano Beach, Fla., will provide aerial coverage for Fox Sports during the NASCAR Cup Duels on Thursday, NASCAR Gander RV & Outdoors Truck Series race on Friday, NASCAR Xfinity Series race on Saturday and Daytona 500 on Sunday.