NASCAR Xfinity Series – Race No. 17 – Alsco 300
NASCAR Camping World Truck Series – Race No. 12 – Buckle Up In Your Truck 225
Kentucky Speedway (1.5-mile oval) – Sparta, Ky.
Fast Facts for July 12-14, 2018
Tire: Goodyear Eagle Speedway Radials
Cup: 3 sets for practice, 1 set for qualifying and 7 sets for the race;
Xfinity: 7 sets for the event;
Truck: 6 sets for the event
Left-side — D-4798; Right-side — D-4750
Left-side — 2,224 mm (87.56 in.);
Right-side — 2,250 mm (88.58 in.)
Minimum Recommended Inflation:
Left Front — 22 psi; Left Rear — 22 psi;
Right Front — 52 psi; Right Rear — 50 psi
Storyline – Goodyear tests Kentucky, adds grip as track ages: This being year two of this track surface at Kentucky Speedway, Goodyear tested at the track in May and has brought back a new left-side tire that has a tread compound to give more grip. Directly after a repave, tracks have a lot of grip in them from the new asphalt. As the track weathers, and the surface loses grip over time, Goodyear will often add more mechanical grip to the cars through its tire set-up. The tiremaker also tested at Kentucky before the 2017 NASCAR weekend and changed its right-side tire for that race. We return in 2018 with that same right-side tire.
“We had a great roster of drivers at our Kentucky test in May and we have come back with a grip improvement on the left-side of the car,” said Greg Stucker, Goodyear’s director of racing. “After having a new track surface put down in both 2016 and 2017, we return this year with the track having its first chance to weather for a full year. As we move on from the repaves, we always like to keep up with the surface. A tripleheader NASCAR weekend gives us our best look since we have full fields in actual race conditions, but holding tire tests are a critical part of our program. Tests give us the opportunity to try different compounds and constructions so we can fine tune our tire recommendation and make for the best racing possible.”
Notes – New left-side debuts for all three NASCAR series at Kentucky: Teams in all three NASCAR national series in action at Kentucky this week will run the same tire set-up . . . teams will run the same right-side tire code as last year at Kentucky, but with a new left-side code . . . compared to what was run last season, this left-side tire features a construction update and a compound change to give the cars and trucks more grip . . . this tire set-up came out of a Goodyear test at Kentucky on May 15-16 . . . drivers participating in that test were Clint Bowyer, William Byron, Joey Logano, Ryan Newman and Martin Truex Jr. . . . as on all NASCAR ovals greater than one mile in length, teams are required to run liners in all four tire positions at Kentucky . . . air pressure in those inner liners should be 12-25 psi greater than that of the outer tire.
— Goodyear Racing —