Teams in both the NASCAR Sprint Cup and Nationwide Series will run the same Goodyear tire codes at Darlington this week . . . this is the same left-side tire code (D-4392) that teams in these two series ran at Darlington the last two seasons . . . these teams have also run this left-side tire at Texas (including earlier this season), Homestead and Chicagoland in the past . . . this is the first time these teams have run this right-side tire code (D-4552) at Darlington, though they did run it at Charlotte last season and will do so again later this month . . . compared to what was run at Darlington last year, this right-side tire features just a slight construction change to bring it into line with what is run at similar speedways . . . this tire set-up came out of a Goodyear test with the Gen-6 car at Darlington on February 5 . . . drivers and teams participating in that test were Carl Edwards in the #99 Roush Fenway Ford, Denny Hamlin the #11 Joe Gibbs Racing Toyota, Paul Menard in the #27 Richard Childress Racing Chevy, Juan Pablo Montoya in the #42 Earnhardt Ganassi Racing Chevy and Martin Truex Jr. in the #56 Michael Waltrip Racing Toyota . . . as on all NASCAR ovals greater than one mile in length, teams are required to run inner liners in all four tire positions at Darlington . . . air pressure in those inner liners should be 12-25 psi greater than that of the outer tire.(Goodyear), see tire codes, pressures, set limits and more on the Darlington Race Info page – Goodyear section.
