All three NASCAR national series are in action this weekend with events at Dover International Speedway and Las Vegas Motor Speedway.
The Xfinity and Sprint Cup Series visit Dover and will run the same combination of left and right-side tires that were run at the track in May. However, that is the only similarity. For the Camping World Truck Series, they will run a different tire setup from what was used at Las Vegas last year.
SPRINT CUP TIRE INFO:
Set limits: Sprint Cup - five sets for practice and qualifying, nine sets for the race
Tire Codes: Left-side -- D-4684; Right-side -- D-4696
Tire Circumference: Left-side -- 87.24 in. (2,216 mm); Right-side -- 88.35 in. (2,244 mm)
Minimum Recommended Inflation: Left Front -- 19 psi; Left Rear -- 19 psi; Right Front -- 49 psi; Right Rear -- 45 psi
While teams in the NASCAR Sprint Cup and Xfinity Series will run the same right-side tire code at Dover this weekend, they will run distinct left-side codes. Sprint Cup teams ran their left-side tire code (D-4684) at Texas Motor Speedway in April and at Chicagoland Speedway two weeks ago.
Sprint Cup teams also ran this right-side tire code (D-4696) at Darlington Raceway in September. Dover is unique among NASCAR ovals one-mile or less in length, in that inner liners are required on all four tire positions. Air pressure in those inner liners should be 12-25 psi greater than that of the outer tire.
XFINITY TIRE INFO:
Set limits: Xfinity - six sets for the event
Tire Codes: Left-side -- D-4692; Right-side -- D-4696
Tire Circumference: Left-side -- 87.24 in. (2,216 mm); Right-side -- 88.35 in. (2,244 mm)
Minimum Recommended Inflation: Left Front -- 21 psi; Left Rear -- 19 psi; Right Front -- 49 psi; Right Rear -- 45 psi
Xfinity teams ran their left-side tire code (D-4692) at Darlington Raceway last month, while Dover is the only track at which they run this right-side tire code (D-4696). Dover is unique among NASCAR ovals one-mile or less in length, in that inner liners are required on all four tire positions. Air pressure in those inner liners should be 12-25 psi greater than that of the outer tire.
TRUCK SERIES TIRE INFO:
Set limits: six sets for the event
Tire Codes: Left-side -- D-4668; Right-side -- D-4672
Tire Circumference: Left-side -- 87.56 in. (2,224 mm); Right-side -- 88.46 in. (2,247 mm)
Minimum Recommended Inflation: Left Front -- 26 psi; Left Rear -- 26 psi;Right Front -- 58 psi; Right Rear -- 54 psi
This is the first time teams have run this left-side tire code (D-4668), though they did run this right-side tire code (D-4672) at Kansas Speedway earlier this season. Both of these tires feature the same compounds run at Las Vegas last year, but have construction changes that bring them into line with what other NASCAR teams run at this track.
This is the same combination of left and right-side tires Xfinity Series teams ran at Las Vegas in March. As on all NASCAR ovals greater than one-mile in length, teams are required to run liners in all four tire positions at Las Vegas. Air pressure in those inner liners should be 12-25 psi greater than that of the outer tire.