Goodyear Fast Facts — Kansas
NASCAR Cup Series — Race No. 12 – 267-laps / 400.5 miles
Kansas Speedway (1.5-mile oval) – Kansas City, Kan.
Tire: Goodyear 18-inch Eagle Speedway Radials
Set limits: Cup: 1 set for practice, 1 set for qualifying and 9 sets for the race (8 race sets plus 1 set transferred from qualifying)
Tire Codes: Left-side — D-5184; Right-side — D-5222
Tire Circumference: Left-side — 2,263 mm (89.09 in.); Right-side — 2,277 mm (89.65 in.)
Minimum Recommended Inflation: Left Front — 20 psi; Left Rear — 22 psi; Right Front — 50 psi; Right Rear — 46 psi
Notes – Second straight week on this tire set-up for Cup teams: Being on 18-inch bead diameter tires, NASCAR Cup teams will run a different tire set-up than those in the Craftsman Truck Series at Kansas this weekend . . . Cup teams ran this right-side tire code twice at Kansas in 2024 . . . this is a different left-side tire code than these teams ran at this track last season (compound change for more tire wear and lap-time fall-off) . . .Cup teams have run this same tire set-up at Las Vegas, Homestead, Darlington and Texas already this season . . . with this 18-inch tire, and its lower profile sidewall, Cup cars do not run inner liners in any of their tires.
Goodyear quote – Stu Grant, Goodyear’s general manager of global race tires: “The Cup Series has really put on some great races on intermediate tracks over the past several years, and we follow up last week’s race at Texas with another one this week. Teams will take on the mile-and-a-half Kansas track on the same tire set-up they ran at Texas, as well as at several other tracks earlier this season, so they have a great familiarity there. Having that recent experience on a particular tire set-up will help teams get up to speed quickly and know what to expect throughout the race.”