Jayski's Silly Season SiteJayski's Silly Season Site

Goodyear Fast Facts — Kansas


NASCAR Cup Series — Race No. 19 – 267-laps / 400.5 miles
NASCAR Xfinity Series – Race No. 17 – 167 laps / 250.5 miles
NASCAR Gander RV & Outdoors Truck Series – Race No. 9 — 134 laps / 201 miles
NASCAR Gander RV & Outdoors Truck Series – Race No. 10 — 134 laps / 201 miles
Kansas Speedway (1.5-mile oval) – Kansas City, Kan.

Fast Facts for July 23-25, 2020

Tire: Goodyear Eagle Speedway Radials

Set limits:
Cup: 8 sets for the race;
Xfinity: 5 sets for the event;
Truck – Friday: 4 sets for the race;
Truck – Saturday: 4 sets for the race

Tire Codes:
Left-side — D-4942;
Right-side — D-4978

Tire Circumference:
Left-side — 2,225 mm (87.60 in.);
Right-side — 2,252 mm (88.66 in.)

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

Storyline – Tire wear now a factor at Kansas: Since its repave in 2012, the four-season weather of the area has aged the track surface at Kansas Speedway gradually over the past number of years. Even with this downforce package, tire give-up should be around one-and-a-half seconds over the course of a full fuel run. While Kansas is not considered a high-wear track, tires will matter and tire management will come into play.

"The track surface at Kansas has weathered over the past several years, and teams now have to plan their race strategy to include tire wear," said Greg Stucker, Goodyear’s director of racing. "The tire set-up we will run has two tire codes that are well known to the teams. While the Cup and Xfinity cars ran this left-side tire at Kansas last fall, teams have run this right-side tire the past two weeks at both Texas and Kentucky. Those tracks are very smooth and don’t wear tires as much, so this right-side is designed to wear and lay rubber on the track. Combine that with the slightly more abrasive surface at Kansas, and tire management will be a factor."

Notes – Teams move to popular right-side at Kansas: Teams in all three NASCAR series will run the same tire set-up at Kansas this week . . . for the Cup and Xfinity cars, they ran this left-side tire code at Kansas last October, but with a different right-side code . . . this right-side features a construction update compared to what was run last fall . . . for the Trucks, both the left-side (construction update and compound change for more grip and wear) and right-side (construction update) tire codes are different than what they ran at Kansas last May . . . teams in all series have run this right-side tire at Las Vegas, Kentucky and Texas this season . . . all NASCAR teams also ran this left-side tire at Charlotte in May . . . as on all NASCAR ovals greater than one mile in length, 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 —