Pontiac Grand Prix Wheel Lug Pattern, Offset & Center Bore Reference

The Pontiac Grand Prix features a range of wheel lug patterns depending on the model year, all specified by lug count and PCD (pitch circle diameter in millimeters). Understanding these specifications ensures proper wheel mounting and fitment.\n\nAlong with the lug pattern, key measurements such as offset (ET) and center bore diameter are critical for selecting compatible aftermarket wheels or replacements. These dimensions affect wheel alignment and clearance with suspension components.\n\nOur year-sorted reference table provides detailed Pontiac Grand Prix wheel fitment specs including lug pattern, offset range, center bore size, and typical rim diameters. This helps enthusiasts and professionals properly match wheels to the vehicle’s original specifications and desired performance.

Year
Make / model / trim Year Tire Rim width (in) Rim diam. (in) Bolt pattern Offset ET Bore DIA Mounting
Pontiac Grand Prix 3.8i V62007225/60R167.5165×1154070.3M12*1,5
Pontiac Grand Prix 3.8i V62006225/60R167.5165×1154070.3M12*1,5
Pontiac Grand Prix 3.8i V62005225/60R167.5165×1154070.3M12*1,5
Pontiac Grand Prix 3.8i V62004225/60R167.5165×1154070.3M12*1,5
Pontiac Grand Prix 3.1i2003205/70R157155×1154870.3M12*1,5
Pontiac Grand Prix 3.8i2003225/60R167165×1154070.3M12*1,5
Pontiac Grand Prix 5.3L V82003225/60R167.5165×1154070.3M12*1,5
Pontiac Grand Prix 3.1i2002205/70R157155×1154870.3M12*1,5
Pontiac Grand Prix 3.8i2002225/60R167165×1154070.3M12*1,5
Pontiac Grand Prix 5.3L V82002225/60R167.5165×1154070.3M12*1,5
Pontiac Grand Prix 3.1i2001205/70R157155×1154870.3M12*1,5
Pontiac Grand Prix 3.8i2001225/60R167165×1154070.3M12*1,5
Pontiac Grand Prix 5.3L V82001225/60R167.5165×1154070.3M12*1,5
Pontiac Grand Prix 3.1i2000205/70R157155×1154870.3M12*1,5
Pontiac Grand Prix 3.8i2000225/60R167165×1154070.3M12*1,5
Pontiac Grand Prix 5.3L V82000225/60R167.5165×1154070.3M12*1,5
Pontiac Grand Prix 3.1i1999205/70R157155×1154870.3M12*1,5
Pontiac Grand Prix 3.8i1999225/60R167165×1154070.3M12*1,5
Pontiac Grand Prix 5.3L V81999225/60R167.5165×1154070.3M12*1,5
Pontiac Grand Prix 3.1i1998205/70R157155×1154870.3M12*1,5
Pontiac Grand Prix 3.8i1998225/60R167165×1154070.3M12*1,5
Pontiac Grand Prix 5.3L V81998225/60R167.5165×1154070.3M12*1,5
Pontiac Grand Prix 3.1i1997205/70R157155×1154870.3M12*1,5
Pontiac Grand Prix 3.8i1997225/60R167165×1154070.3M12*1,5
Pontiac Grand Prix 5.3L V81997225/60R167.5165×1154070.3M12*1,5
Pontiac Grand Prix 3.1i1996205/70R157155×1154870.3M12*1,5
Pontiac Grand Prix 3.8i1996225/60R167165×1154070.3M12*1,5
Pontiac Grand Prix 5.3L V81996225/60R167.5165×1154070.3M12*1,5

FAQ

What is the common lug pattern for Pontiac Grand Prix wheels?
Most Pontiac Grand Prix models use a 5-lug pattern with a pitch circle diameter (PCD) of 115mm, but this can vary by year.
Why is wheel offset important for Pontiac Grand Prix fitment?
Wheel offset (ET) determines the position of the wheel relative to the suspension and fenders, affecting handling and clearance.
How does the center bore size affect wheel compatibility on a Pontiac Grand Prix?
The center bore ensures the wheel centers accurately on the hub; a mismatched size can cause vibrations or improper mounting.
Tire size calculatorShow

Compare two tire sizes — diameter, speedometer error, and clearance change.

inchmm
Size 1Size 2DiffDiff(%)
Diameter25.0"25.4"0.5"1.89%
Width7.7"8.5"0.8"10.26%
Circumference78.4"79.9"1.5"1.86%
Profile height5.0"4.2"-0.7"-15.08%
Turnover per mile80779314-1.73%
Clearance--+0.2"-
25.0"
7.7"
old tire side
25.5"
8.5"
new tire side
old tire
15"
old rim
5.0"
new tire
17"
new rim
4.2"

Speedometer Error

(First wheel OEM size)

Reading20 mph30 mph40 mph50 mph60 mph70 mph80 mph90 mph
Actual20.430.540.750.961.171.281.491.6