NASCAR Nextel Cup Series -- Race No. 23 -- GFS Marketplace 400 NASCAR Busch Series -- Race No. 25 -- Carfax 250 Michigan International Speedway (2.0-mile oval) -- Brooklyn, Mich. Fast Facts for August 17-19, 2007 Tire: Goodyear Eagle Speedway ...
NASCAR Nextel Cup Series -- Race No. 23 -- GFS Marketplace 400
NASCAR Busch Series -- Race No. 25 -- Carfax 250
Michigan International Speedway (2.0-mile oval) -- Brooklyn, Mich.
Fast Facts for August 17-19, 2007
Tire: Goodyear Eagle Speedway Radials
Number of Tires:
Nextel Cup: Left-side -- 1,425, Right-side -- 1,425
Busch Series: Left-side -- 575, Right-side -- 575
Tire Codes: Left-side -- D-4078; Right-side -- D-4062
Tire Circumference: Left-side -- 87.4 in.; Right-side -- 88.7 in.
Technical Inspection Inflation:
Left Front -- 30 psi; Left Rear -- 30 psi; Right Front -- 48 psi; Right Rear -- 45 psi
Minimum Recommended Inflation:
Left Front -- 22 psi; Left Rear -- 20 psi; Right Front -- 45 psi; Right Rear -- 42 psi
Estimated Pit Window: Every 40-44 laps, based on fuel mileage (Nextel Cup).
Notes: This is the same combination of left- and right-side tires that Goodyear brought to the NASCAR Nextel Cup/Craftsman Truck Series weekend in June . . . this is a popular set-up in the 2007 tire lineup, being run at many major NASCAR tracks -- Michigan, California, Dover, Kansas and Kentucky (Busch and Craftsman Truck only) . . . in addition, this left-side code (D-4078) is run with a different right-side at Chicagoland, Texas and Homestead this season . . . while the left-side code is new this season, this right-side code (D-4062) was run at Michigan, Dover and Kansas in 2006 . . . as on all NASCAR ovals greater than one mile in length, teams are required to run inner liners in all four tire positions at Michigan . . . air pressure in those inner liners should be 12-25 psi greater than that of the outer tire.
-credit: goodyear racing