Goodyear Tire Fast Facts - Martinsville

GOODYEAR TIRE NOTES 

NASCAR Sprint Cup Series -- Race No. 6 – STP Gas Boosters 500 
NASCAR Camping World Truck Series -- Race No. 2 – Kroger 250 
Martinsville Speedway (0.526-mile oval) – 
Fast Facts for April 5-7, 2013 

Tire: Goodyear Eagle Short Track Radials (Sprint Cup); 
Goodyear Wrangler Short Track Radials (Camping World Truck) 

Set limits: Sprint Cup: 5 sets for practice/qualifying, and 11 sets for 
the race; 
Camping World Truck: 4 sets for the event 

Number of Tires: Sprint Cup: Left-side -- 1,325, Right-side -- 1,325; 
Camping World Truck: Left-side – 325, Right-side -- 325 

Tire Codes: Left-side -- D-4588; Right-side -- D-4590 

Tire Circumference: Left-side -- 87.5 in. (2,222 mm); Right-side -- 
88.6 in. (2,250 mm) 

Technical Inspection Inflation: Left Front -- 25 psi; Left Rear -- 25 
psi 
Right Front -- 25 psi; Right Rear -- 25 psi 

Minimum Recommended Inflation: Left Front -- 10 psi; Left Rear -- 10 
psi; 
Right Front -- 23 psi; Right Rear -- 22 psi 

Teams in both NASCAR series in action at Martinsville this week 
will run the same tire codes, though the Sprint Cup tires will be 
branded "Goodyear Eagle," while the Camping World Truck tires will be 
branded "Goodyear Wrangler". This is the first time these teams 
have run on either of these two tire codes. Compared to what was 
run at Martinsville last year, this left-side tire code (D-4588) 
features slight construction and compound changes, while this 
right-side code (D-4590) features a minor compound change and has 
slightly less gage (tread depth). This tire set-up came out of a 
Goodyear test at Martinsville last August 7-8. Drivers and teams 
participating in that Gen-6 test were Carl Edwards in the No. 99 Roush 
Fenway Racing Ford, Kevin Harvick in the No. 29 Richard Childress 
Racing Chevrolet, Jimmie Johnson in the No. 48 Hendrick Motorsports 
Chevrolet and Martin Truex Jr. in the No. 56 Michael Waltrip Racing 
Toyota. As on most NASCAR ovals one mile or less in length, teams 
will not run inner liners in their tires at Martinsville.

- Goodyear Racing News