GOODYEAR TIRE NOTES NASCAR Cup Series — Race No. 33 – 267-laps / 400.5 miles
Kansas Speedway (1.5-mile oval) – Kansas City, Kan.
Fast Facts for October 18, 2020
Tire: Goodyear Eagle Speedway Radials
Set limits:
Cup: 9 sets for the race
Tire Codes:
Left-side — D-4942;
Right-side — D-4986
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 – Relatively “smooth,” Kansas will still wear tires: While Kansas Speedway is not really considered a high tire wear track, it has aged since its repave in 2012 and does produce some tire wear. Teams can expect to see approximately a second-and-a-half of fall-off in lap times over the course of a full fuel run. On Kansas and similar tracks, tire wear is an important factor to help tires run cooler and at a more optimal level.
“Teams now come to Kansas and must consider tire wear as part of their race strategy,” said Greg Stucker, Goodyear’s director of racing. “Tire wear, especially on a relatively ‘smooth’ surface like Kansas is a good thing. When a tire wears over the course of a run, it sheds rubber and allows heat to dissipate through the tread, making a better performing tire overall. We have run this left-side tire at Kansas dating back to last October, but this is a relatively new right-side code. We observed at a handful of tracks – Kansas, Las Vegas, Texas – the Cup cars could use a little more grip, so we have made that adjustment at those three tracks for these late season races. We were very pleased with the results of the tire’s debut at Las Vegas a couple weeks ago.”
Notes – Change to right-side tire for Cup cars at Kansas: While teams in all three NASCAR series will run the same left-side tire code at Kansas this week, those in the Cup Series will run a different right-side code than those in the Xfinity and Gander RV & Outdoors Truck Series . . . for the Cup cars, this is the same left-side tire code that they ran at Kansas earlier this season . . . they have also run this left-side on the Charlotte oval in May . . . this right-side tire code is different from what they ran at this track in July, and features a compound change to give the cars more grip . . . Cup teams also ran this right-side at Las Vegas-2 three weeks ago . . . 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 TIRE NOTES NASCAR Xfinity Series – Race No. 30 – 200 laps / 300 miles
NASCAR Gander RV & Outdoors Truck Series – Race No. 21 — 134 laps / 201 miles
Kansas Speedway (1.5-mile oval) – Kansas City, Kan.
Fast Facts for October 16-17, 2020
Tire: Goodyear Eagle Speedway Radials
Set limits:
Xfinity: 5 sets for the race;
Truck: 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
Notes – Xfinity, Trucks return on same tire set-up at Kansas: While teams in all three NASCAR series will run the same left-side tire code at Kansas this week, those in the Xfinity and Gander RV & Outdoors Truck Series will run a different right-side code than those in the Cup Series . . . for Xfinity and Truck, this is the same tire set-up they ran at Kansas in July . . . these teams also ran this left-side tire code on the Charlotte oval in May and this right-side code at Kentucky, Las Vegas, Michigan (Truck only) and Texas this season . . . 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 —