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The 2018 GMC Terrain comes with different tire sizes depending on the version you choose. The Denali model has 235/55R19 tires, while the SL and SLE Diesel models come with 225/65R17 tires. The SLE and SLT versions have varying tire sizes, including 225/65R17, 225/60R18, and 235/50R19. To ensure the right tire pressure, maintain 35 psi for both front and rear tires across all versions. The wheel size for the Terrain ranges from 17 to 19 inches in diameter and 7 to 7.5 inches in width. The SUV features a wheel bolt pattern of 5x115mm, a thread size of M12 X1.5, a center bore of 70.3 mm, and uses lug nuts as wheel fasteners.
The optimal tire inflation pressure suggested
The standard wheel measurement on the 2018 GMC Terrain is 17 inches. The tire specification for this model is P255/70R17, and it is advised to maintain a tire pressure of 35 pounds per square inch (psi) for optimal performance.
The ideal tire pressure for a P255/70R17 tire is 35 pounds per square inch.