Pontiac G8 bolt pattern, wheel sizes and wheels that fit
Pontiac G8 wheel fitment: bolt pattern 5x120 (2008–2009), factory wheel and tire sizes for every year, the aftermarket sizes DriveRight lists as tested, wheels in stock that fit, and 3 real wheel builds on the G8.
See wheels on your G8Quick answers
What is the Pontiac G8 bolt pattern?
The Pontiac G8 uses a 5x120 bolt pattern (2008–2009 models).
What size wheels fit a Pontiac G8?
Factory wheels: 18x8 +48 (2008–2009). DriveRight's tested aftermarket sizes for the 2009 G8: 17 to 20 in, offsets +30 to +48.
What offset fits a Pontiac G8?
On the 2009 G8, DriveRight's tested offsets run +30 to +48 depending on width and diameter. Lower offsets push the wheel out toward the fender; the table below lists factory offsets by year.
What lug nuts and hub bore does the Pontiac G8 use?
Lug thread: M14x1.5 (2008–2009). Hub bore: 67.1 mm (2008–2009).
What tire size does the Pontiac G8 use?
Factory tires: 245/45R18 (2008–2009).
Pontiac G8 wheel specs by year
| Years | Bolt pattern | Hub bore | Factory wheel | Factory tire | Lug thread | Tested aftermarket sizes |
|---|---|---|---|---|---|---|
| 2008–2009 | 5x120 | 67.1 mm | 18x8 +48 | 245/45R18 | M14x1.5 | 17 to 20 in, offsets +30 to +48 |
Specs: DriveRight vehicle data, base trim per year. Trims can differ; pick yours in the visualizer for an exact list.
Wheels in stock that fit the 2009 Pontiac G8
Pontiac G8 wheel builds
2009 Pontiac G8 GT9six9 SIX-1 5x120 19X8.5 +35 Carbon Gray
2009 Pontiac G8 GTAsanti Black ABL-32 KAISER 5X120 20X9 +30 SATIN BLACK W/ GLOSS BLACK LIP
2008 Pontiac G8 GTSsr Agle Minerva Step Rim 5x120 20x9.5+30 SL Disk Super Black Coat