Xfinity and Sprint Cup Series teams will use the same tire setup this weekend at Indianapolis Motor Speedway as they make their annual visit to the Brickyard.
A two-day tire test on April 26-27 resulted in the same left-side tire code run at Indianapolis last year. This weekend will mark the first time that teams have run the right-side tire code at the 2.5-mile speedway.
SPRINT CUP AND XFINITY TIRE INFO:
Set limits: Sprint Cup – six sets for practice and qualifying and nine sets for the race; Xfinity – six sets for the event
Tire codes: Left-side — D-4650; Right-side — D-4710
Tire circumference: Left side — 87.56 in. (2,224 mm); Right side — 88.23 in. (2,241 mm)
Minimum recommended inflation: Left front — 19 psi; Left rear – 19 psi; Right front — 42 psi; Right rear — 38 psi
Compared with the tire at Indianapolis last year, this right side features slightly less gage (tread thickness) to reduce heat and align with what is run at Pocono. Sprint Cup teams ran this same right-side code at Pocono in June and will again next weekend in the Pennsylvania 400.
As on all NASCAR ovals longer than 1 mile, teams will run inner liners in all four tire positions at Indianapolis. Air pressure in those inner liners should be 12-25 psi greater than that of the outer tire.