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Goodyear Fast Facts — Chicagoland

Monster Energy NASCAR Cup Series — Race No. 17 – Camping World 400
NASCAR Xfinity Series – Race No. 15 – Camping World 300
NASCAR Gander Outdoors Truck Series – Race No. 12 – Camping World 225
Chicagoland Speedway (1.5-mile oval) – Joliet, Ill.
Fast Facts for June 27-30, 2019

Tire: Goodyear Eagle Speedway Radials

Set limits:
Cup: 3 sets for practice, 1 set for qualifying and 9 sets for the race;
(8 race sets plus 1 set transferred from qualifying or practice)
Xfinity: 8 sets for the event;
Truck: 7 sets for the event

Tire Codes:
Left-side — D-4928; Right-side — D-4930

Tire Circumference:
Left-side — 2,227 mm (87.68 in.);
Right-side — 2,248 mm (88.50 in.)

Minimum Recommended Inflation:
Left Front — 19 psi; Left Rear — 19 psi;
Right Front — 48 psi; Right Rear — 44 psi

Storyline – Chicagoland test provides a good direction forward for Goodyear, Cup cars: Goodyear held a tire test at Chicagoland Speedway in May and that session, along with ongoing feedback from teams and drivers on the 2019 Monster Energy NASCAR Cup Series rules package, has provided some fundamental knowledge that will help cars all through the field.  That is coming in the form of a right-side tire that provides more grip to help cars potentially get a bigger run on lead cars.  Speaking specifically of this weekend’s race, that effort has resulted in a right-side tire recommendation that is a grip improvement over what was run at this track last year.

“Based on some indications we saw at our test at Chicagoland, we felt like we could bring some additional grip that will help the cars in traffic.  When a trailing car closes in on a car ahead, it loses some aerodynamic downforce, so the additional mechanical grip from a more tractive right-side tire can help offset that loss,” said Greg Stucker, Goodyear’s director of racing.  “The 2019 Cup rules package has produced some good side-by-side racing so far, but based on what we saw at our test, as well as additional driver feedback, we feel like a more tractive right-side compound might help the cars throughout the field.”

Notes – New tire set-up for all three NASCAR series at Chicagoland: Teams in all three NASCAR series in action at Chicagoland this weekend will run the same Goodyear tire set-up . . . compared to what was run at this track last season, both this left-side and right-side tire feature construction updates to align with what is run at other speedways, while this right-side takes teams from a multi-zone tread tire to a single zone tire and will increase grip . . . this tire set-up was confirmed at a Goodyear test at Chicagoland on May 7 . . . teams (drivers) participating in that test were Penske Racing (Brad Keselowski), Roush-Fenway Racing (Ryan Newman) and Wood Brothers Racing (Paul Menard) . . . as on all NASCAR ovals greater than one mile in length, teams are required to run inner liners in all four tire positions at Chicagoland . . . air pressure in those inner liners should be 12-25 psi greater than that of the outer tire.

— Goodyear Racing —