Both the Xfinity and Gander Outdoors Truck Series will use a brand new tire setup for this weekend’s races at Iowa Speedway.
This is the first time teams in both series have used this combination of left- and right-side tires at Iowa, though Xfinity teams did run this left-side tire code at Phoenix in March. Compared to what was run at Iowa last season, the left- and right-side tires feature minor construction changes to align them with what is run at similar tracks and compound changes for more grip.
As on most NASCAR ovals 1 mile or less in length, teams will not run inner liners in their tires at Iowa.
Here is the tire info.
Set limits: Xfinity: Six sets for the event; Truck: Seven sets for the event
Tire Codes: Left-side — D-4864; Right-side — D-4884
Minimum Recommended Inflation: Left Front – 16 psi; Left Rear – 16 psi; Right Front – 36 psi; Right Rear – 34 psi