Monster Energy NASCAR Cup Series — Race No. 32 – Hollywood Casino 400
NASCAR Xfinity Series – Race No. 30 – Kansas Lottery 300
Kansas Speedway (1.5-mile oval) – Kansas City, Kan.
Fast Facts for October 18-20, 2019
Tire: Goodyear Eagle Speedway Radials
Set limits: Cup: 3 sets for practice, 1 set for qualifying and 10 sets for the race (9 race sets plus 1 set transferred from qualifying or practice);
Xfinity: 7 sets for the event
Left-side — D-4942;
Right-side — D-4796
Left-side — 2,225 mm (87.60 in.);
Right-side — 2,251 mm (88.62 in.)
Minimum Recommended Inflation:
Left Front — 22 psi; Left Rear — 22 psi;
Right Front — 52 psi; Right Rear — 50 psi
Storyline – Tire wear becoming a factor at Kansas: The track surface at Kansas Speedway has weathered over the past several years since its repave in 2012. Monster Energy NASCAR Cup teams have recently seen fall-off of up to two seconds per lap over the course of a full fuel run. Even as the cars slide around less in the corners with this 2019 aerodynamic package — causing slightly less wear compared to last season – teams will likely opt for four-tire stops all day, making pit stops important and bringing the team aspect of the sport into play.
“We have a new left-side tire for Kansas, with a construction update that we have been rolling into most tracks over this season, paired with a right-side tire the teams have a good notebook on after having run it seven times already this year,” said Greg Stucker, Goodyear’s director of racing. “What we have seen Kansas over the past several races is that the track surface has weathered a bit and will wear tires. This right-side tire is also designed to lay rubber, so that will lead to the track changing throughout the weekend as multiple racing grooves are created.”
Notes – Cup cars on new left-side tire at Kansas; new set-up for Xfinity teams vs. ‘18: Teams in both the Monster Energy NASCAR Cup Series and NASCAR Xfinity Series will run the same tire set-up at Kansas this weekend . . . for the Cup cars, they ran this right-side tire code at Kansas in May, but this is a new left-side code (construction update) . . . for the Xfinity cars, this is the first time they have run either of these two tire codes at Kansas – featuring a construction update on both sides of the car and moving from a multi-zone tread on the right-side to a single zone tread compound, compared to last year . . . this is the first time teams in either of these two series have run this left-side tire code, though they have run this right-side code at Kentucky, Las Vegas, Michigan 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.