NASCAR Cup Series teams head to Darlington Raceway for the second time this season, and a largely similar Goodyear Racing Eagle tire setup awaits them.
The right side tire is unchanged compared to the one used in April’s Goodyear 400 and the left side tire is very similar, but has a new tire code due to a minor tread compound update. Goodyear does not anticipate any performance changes around the 1.366-mile oval compared to the previous recommendation. This left side tire has been raced at Charlotte Motor Speedway, Michigan International Speedway and Indianapolis Motor Speedway, while the right side tire has been raced six times this year.
“Returning to Darlington this weekend, we have a very similar Goodyear Racing Eagle tire setup to what was run at the Goodyear 400 in April,” said Justin Fantozzi, Goodyear operations manager for global race tires. “The left side tire features a minor tread compound update designed to deliver equal performance and has been successfully run at other races in 2025.”
The NASCAR Craftsman Truck Series runs on Saturday at Darlington with the same tires as at Homestead-Miami Speedway and Rockingham Speedway. Each of the left and right side tires has also featured at other races. Truck Series teams use inner liners on tracks 1-mile and longer.
Meanwhile, NASCAR Xfinity Series teams will be in action at Portland International Raceway for their sixth road course race of the season. Their Goodyear Racing Eagle tire setup was introduced at Sonoma Raceway in July and ran again at Watkins Glen International.
Fast Facts
NASCAR Cup Series
Race: Cook Out Southern 500 (367 laps / 501.32 miles)
Track: Darlington Raceway (1.366-mile oval)
Date/Time: Sunday, August 31, 6 p.m. ET
TV/Radio: USA, MRN, SiriusXM NASCAR Radio
Tire: Goodyear Racing Eagle
Tire Code: D-5284 left side, D-5222 right side
Previous Usage in 2025: Charlotte; Michigan (LS), Indianapolis (LS); Las Vegas (RS), Homestead-Miami (RS), Darlington (RS), Texas (RS), Kansas (RS), Nashville (RS)
Tire Circumference: 2,263 mm (89.1 in.) left side, 2,277 (89.6 in.) right side
Recommended Minimum Inflation: LF – 20 psi, RF – 48 psi, LR – 22 psi, RR – 44 psi
Total Sets: 14 (12 new race / 1 qualifying transfer to race / 1 practice)
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NASCAR Craftsman Truck Series
Race: Sober or Slammer 200 (147 laps / 200.8 miles)
Track: Darlington Raceway (1.366-mile oval)
Date/Time: Saturday, August 30, 12 p.m. ET
TV/Radio: FS1, NASCAR Racing Network, SiriusXM NASCAR Radio
Tire: Goodyear Racing Eagle
Tire Code: D-6106 left side, D-6130 right side
Previous Usage in 2025: Homestead-Miami, Rockingham; Bristol (LS), Pocono (LS); Charlotte (RS)
Tire Circumference: 2,225 mm (87.6 in.) left side, 2,250 (88.6 in.) right side
Recommended Minimum Inflation: LF – 18 psi, RF – 48 psi, LR – 18 psi, RR – 44 psi
Total Sets: 6 (4 new race / 1 qualifying transfer to start race / 1 practice)
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NASCAR Xfinity Series
Race: Pacific Office Automation 147 (75 laps / 147.75 miles)
Track: Portland International Raceway (1.97-mile road course)
Date/Time: Saturday, August 30, 7:30 p.m. ET
TV/Radio: CW, MRN, SiriusXM NASCAR Radio
Tire: Goodyear Racing Eagle
Tire Code: D-6166 both sides
Previous Usage in 2025: Sonoma, Watkins Glen
Tire Circumference: 2,240 mm (88.2 in.) left side, 2,240 (88.2 in.) right side
Recommended Minimum Inflation: LF – 22 psi, RF – 20 psi, LR – 17 psi, RR – 17 psi
Total Dry Weather Sets: 6 (3 new race / 1 qualifying transfer to start race / 2 practice)
Total Wet Weather Sets: 4 (3 new race / 1 practice)