Sprint Cup & XFINITY Tire Notes/Facts for Auto Club

By @GucciardoJoey

The NASCAR Sprint Cup and XFINITY Series both head to Fontana California's Auto Club Speedway for this weekend's racing action.

Here are some basic tire notes and facts on what teams will be using in each series this racing weekend.

NASCAR XFINITY SERIES:
Tire: Goodyear Eagle Speedway Radials

Set limits:
Xfinity: 8 sets for the event

Tire Codes:
Left-side -- D-4650; Right-side -- D-4408

Tire Circumference:
Left-side -- 87.56 in. (2,224 mm);
Right-side -- 88.43 in. (2,246 mm)

Minimum Recommended Inflation:
Left Front -- 21 psi; Left Rear -- 19 psi;
Right Front -- 45 psi; Right Rear -- 42 psi

NASCAR SPRINT CUP SERIES:
Tire: Goodyear Eagle Speedway Radials:

Set limits: 
Sprint Cup: 5 sets for practice and qualifying and 12 sets for the race

Tire Codes:
Left-side -- D-4650; Right-side -- D-4658

Tire Circumference:
Left-side -- 87.56 in. (2,224 mm); Right-side -- 88.39 in. (2,245 mm)

Minimum Recommended Inflation:
Left Front -- 19 psi; Left Rear -- 19 psi;
Right Front -- 45 psi; Right Rear -- 42 psi