Goodyear Tire Notes: Kansas Speedway

May 5, 2016

NASCAR Sprint Cup teams will run a completely different tire set-up than those in the Camping World Truck Series at Kansas this week, this being the first time Sprint Cup teams have run either of these two tire codes.

Compared to what was run at Kansas last year, the tires on both sides feature a construction change to bring Kansas in line with other speedways. The left-side tire code (D-4656) features a compound change to give the cars more grip and the right-side tire code (D-4662) is one of Goodyear’s multi-zone tread tires, with two different compounds on the same tire.

The compound on the inboard two inches (Endurance Zone) being the same as the full tread run at Kansas last year, and the compound on the outboard 10 inches (Traction Zone) being more tractive to give more grip. This tire combination came out of a Goodyear test at Kansas last September 14-15 with drivers Aric Almirola, Jimmie Johnson, Martin Truex Jr. and J.J. Yeley. 

On all NASCAR ovals greater than one mile in length, teams are required to run inner liners in all four tire positions at Kansas. The air pressure in those inner liners should be 12-25 psi greater than that of the outer tire.

NASCAR Sprint Cup Series. Race No. 11 – Go Bowling 400
Kansas Speedway (1.5-mile oval) – Kansas City, Kan.
Fast Facts for May 6-7, 2016
Tire: Goodyear Eagle Speedway Radials
Set limits: Sprint Cup, 5 sets for practice/qualifying and 10 sets for the race
Tire Codes: Left-side. D-4656; Right-side. D-4662
Tire Circumference: Left-side, 87.56 in. (2,224 mm); Right-side, 88.35 in. (2,244 mm)
Minimum Recommended Inflation: Left Front, 25 psi; Left Rear, 25 psi; Right Front, 54 psi; Right Rear, 50 psi

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