Goodyear Fast Facts — Kansas – Speedway Digest – Home for NASCAR News

NASCAR Cup Series — Race No. 12 – 267-laps / 400.5 miles
Kansas Speedway (1.5-mile oval) – Kansas City, Kan.
Fast Facts for May 4-5, 2024

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-5186; 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

Storyline – Recommended air pressures in focus at Kansas: A return to Kansas Speedway means NASCAR Cup teams will be looking for speed while maintaining grip. Along with the car’s geometry settings, teams adjust air pressures in their tires to help achieve those goals. Goodyear works with teams each race to provide data to highlight the balance between grip and durability. Tires with lower air pressures over-deflect more, causing damage to the sidewall that can result in air loss.
“Being an intermediate track, we will see high speeds at Kansas Speedway,” said Greg Stucker, Goodyear’s director of Racing. “Teams will try to maximize that speed by gaining grip, and one of the tuning tools they use is air pressure. We have a different right-side tire than Cup teams ran at Kansas last fall and it has a construction update we have been integrating into tracks as teams advance their set-ups and we continue to learn more about this Next Gen car. We have provided teams good data that shows the importance of running the minimum recommended air pressures at multiple car settings. Our engineers will also be at the track to work with teams further to evaluate where they’re at and what they can do to get maximum performance out of the tires.”

Notes – Right-side tire change for Cup at Kansas: 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 . . . this is the same left-side tire code that Cup teams have run at Kansas since September 2022 . . . this is a different right-side code than these teams ran at this track last season . . . this right-side features a construction update compared to the 2023 version . . . Cup teams have run this same tire set-up at Las Vegas 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 TIRE NOTES

NASCAR Craftsman Truck Series – Race No. 8 — 134 laps / 201 miles
Kansas Speedway (1.5-mile oval) – Kansas City, Kan.
Fast Facts for May 3-4, 2024

Tire: Goodyear Eagle 15-inch Speedway Radials

Set limits: Craftsman Truck: 5 sets for the event

Tire Codes: Left-side — D-6110; Right-side — D-6112

Tire Circumference: Left-side — 2,225 mm (87.60 in.); Right-side — 2,250 mm (88.58 in.)

Minimum Recommended Inflation: Left Front — 18 psi; Left Rear — 18 psi;
Right Front — 50 psi; Right Rear — 48 psi

Notes –Trucks return to Kansas on established tire set-up: Being on 15-inch bead diameter tires, Craftsman Truck Series teams will run a different tire set-up than those in the Cup Series at Kansas this weekend . . . this is the same combination of left- and right-side tires that Truck teams have run at Kansas since the start of 2022 . . . they have also run this exact tire set-up at Las Vegas and Texas already this season . . . as on all NASCAR ovals greater than one mile in length, Truck teams are required to run inner liners in all four tire positions at Kansas . . . air pressure in those inner liners should be 12-25 psi greater than that of the outer tire.

Goodyear Racing PR