2006 Pontiac Grand Prix GXP Wheel & Tire Sizes
Complete fitment guide for the 2006 Pontiac Grand Prix GXP: factory tire sizes, compatible wheel diameters, widths and offsets, and the 5x115 bolt pattern — for every trim.
Bolt Pattern
5x115
Centre Bore
70.3 mm
Lug nuts
M12 x 1.5
Wheel Diameters
18"–19"
Factory (OEM) Tire Sizes for the 2006 Pontiac Grand Prix GXP
Front / square fitments
Rear (staggered fitments)
Click any size to shop tires in stock now — free shipping anywhere in Canada, optional installation at our 5 GTA locations.
2006 Pontiac Grand Prix GXP Wheel Fitment by Trim
Compatible wheel diameter, width and offset ranges for each 2006 Pontiac Grand Prix GXP configuration. Trims with different front and rear specs run a staggered setup.
5.3i · Saloon
StaggeredV8 · Petrol
| Spec | Front | Rear |
|---|---|---|
| Wheel diameter | 18–19" | 18–19" |
| Wheel width | 8–8.5" | 7–7.5" |
| Wheel offset | 40 mm | 55 mm |
| Tire width | 255–265 mm | 225–235 mm |
2006 Pontiac Grand Prix GXP Fitment FAQ
What is the bolt pattern on a 2006 Pontiac Grand Prix GXP?
The 2006 Pontiac Grand Prix GXP uses a 5x115 bolt pattern (5 lug nuts on a 115 mm circle) with a 70.3 mm centre bore.
What size tires fit a 2006 Pontiac Grand Prix GXP?
Factory (OEM) tire sizes for the 2006 Pontiac Grand Prix GXP include 255/45R18, 265/40ZR19; staggered rear fitments use 225/50R18, 235/45ZR19. Always confirm against the placard inside the driver's door jamb.
What wheel sizes can I put on a 2006 Pontiac Grand Prix GXP?
Depending on trim, the 2006 Pontiac Grand Prix GXP accepts wheels from 18" up to 19" in diameter with the correct width and offset — larger diameters typically require lower-profile tires to keep the overall rolling diameter stock.
What lug nut size does a 2006 Pontiac Grand Prix GXP use?
The 2006 Pontiac Grand Prix GXP uses M12 x 1.5 lug nuts.
Fitment data is provided as a guide. Always verify sizes against your vehicle's door-jamb placard or with our fitment experts before ordering.