Pontiac Grand Prix Tire Sizes and Rim Specifications by Year and Trim

The Pontiac Grand Prix features various tire size markings that differ by model year and trim level. Understanding these markings is essential for selecting the correct tires or wheels. Common tire sizes range from 205/65R15 to 225/55R16, with variations depending on sport or luxury trims.\n\nRim widths and diameters for the Grand Prix vary between 6 to 7.5 inches in width and 15 to 17 inches in diameter. Higher trims typically feature wider rims to accommodate larger tires that improve handling and aesthetics.\n\nWhen comparing trims, it's important to note that sportier versions may have larger rim diameters and lower profile tires, while base models stick to smaller, more comfort-oriented sizes. Always consult the vehicle’s placard or owner’s manual for exact specifications before replacing tires or wheels.

For bolt pattern (PCD), offset ET, center bore, and mounting details, open the bolt pattern page for Pontiac Grand Prix.