NASCAR Cup Series — Race No. 30 – 267-laps / 400.5 miles
Kansas Speedway (1.5-mile oval) – Kansas City, Kan.
Fast Facts for September 28-29, 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: Kansas Speedway, being an intermediate track, means that NASCAR Cup teams will be looking to gain grip and speed to maximize performance. Along with the car’s geometry settings, adjusting air pressures in their tires is another way teams accomplish that goal. 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. With the balance of this Next Gen car being more to the rear than that of the previous generation car, the right-rear corner will be the primary focus this weekend.
“Cup teams will try to maximize speed at Kansas by gaining grip, and one of the tuning tools they use is air pressure,” said Greg Stucker, Goodyear’s director of racing. “Each week we work with teams and provide them data that demonstrates why running our minimum recommended pressures is important in the ‘risk versus reward” balance of racing on these intermediate tracks.”
Notes – No tire changes for Cup teams at Kansas: Being on 18-inch bead diameter tires, NASCAR Cup teams will run a different tire set-up than those in the Xfinity and Craftsman Truck Series at Kansas this weekend . . . this is the same combination of left- and right-side tires that these teams ran at Kansas in May . . . Cup teams have also run this same tire set-up at Las Vegas, Texas, Nashville and Pocono this season . . . with this 18-inch tire, and its lower profile sidewall, Cup cars do not run inner liners in any of their tires.
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GOODYEAR TIRE NOTES
NASCAR Xfinity Series – Race No. 27 — 200 laps / 300 miles
NASCAR Craftsman Truck Series – Race No. 19 — 134 laps / 201 miles
Kansas Speedway (1.5-mile oval) – Kansas City, Kan.
Fast Facts for September 27-28, 2024
Tire: Goodyear Eagle 15-inch Speedway Radials
Set limits: Xfinity: 6 sets for the event;
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 – Xfinity, Trucks return to Kansas on established tire set-up: Being on 15-inch bead diameter tires, NASCAR Xfinity and 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 teams in both of these series have run at Kansas since the start of 2022 . . . they have also run this exact tire set-up at Las Vegas (both series), Texas (both series) and Michigan (Xfinity only) already this season . . . as on all NASCAR ovals greater than one mile in length, Xfinity and 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.
Follow us on X: @GoodyearRacing.
Goodyear Racing PR
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