BUSCH: Texas: Goodyear Racing preview

NASCAR Nextel Cup Series -- Race No. 7 -- Samsung 500
NASCAR Busch Series -- Race No. 8 -- O'Reilly 300

Texas Motor Speedway (1.5-mile oval) -- Fort Worth, Tex.
Fast Facts for April 12-15, 2007

Tire: Goodyear Eagle Speedway Radials

Number of Tires:
Nextel Cup: Left-side -- 1,700, Right-side -- 1,700
Busch Series: Left-side -- 600, Right-side -- 600

Tire Codes: Left-side -- D-4078; Right-side -- D-4064

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 -- 50 psi; Right Rear -- 47 psi

Minimum Recommended Inflation: Left Front -- 23 psi; Left Rear -- 21 psi; Right Front -- 49 psi; Right Rear -- 45 psi

Estimated Pit Window: Every 48-52 laps, based on fuel mileage (Nextel Cup).

Notes: Both the NASCAR Nextel Cup and Busch Series will run the same tire codes at Texas this weekend, . . . this is the first time Goodyear has brought this specific combination of left- and right-side tires to the track, though each of these tire codes have been run in different combinations in the past . . . this left-side code (D-4078) is new to the Goodyear tire lineup for 2007 and was run by teams in both these series at California in February . . . this right-side code (D-4064) was run at both Chicagoland and Homestead during the second half of 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 Texas . . . air pressure in those inner liners should be 12-25 psi greater than that of the outer tire.

-credit: goodyear racing