Teams in both the Nextel Cup and Busch Series will run the same tire codes at Chicagoland this weekend . . . this is the same specific combination of left- and right-side tires that Nextel Cup and Busch Series teams ran at Texas earlier this season . . . in addition, teams in these two series have run this left-side code (D-4078) with a different right-side code at several other tracks this season, including California, Dover and Michigan . . . Busch teams have also run this left-side code at Kansas and Kentucky in 2007 . .. 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. The estimated pit window for the Nextel Cup cars are every 50-55 laps, based on fuel mileage.(Goodyear PR), see the full notes, codes, pressures on my Chicago Race Info page.(7-13-2007)
