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For the 2011 Chevrolet HHR, the recommended tire pressure is 30 psi for both the front and rear tires. The LS Panel Sport Wagon and the LS Sport Wagon have tire sizes of 215/55R16, while the LT Panel Sport Wagon and the LT Sport Wagon have tire sizes of 215/55R16 and 215/50R17. The wheels on the HHR are 16 inches in diameter and 6.5 inches in width. The wheel bolt pattern for all tire sizes is 5x110mm with a thread size of M12 X1.5. The center bore is 65.1 mm, and lug nuts are used as the wheel fasteners.
Chevy recommends maintaining a tire pressure of 30 pounds per square inch (psi) for both the front and rear tires on this vehicle.