Pontiac Bonneville VIII Wheel Lug Pattern, Offset, and Rim Size Guide
The Pontiac Bonneville VIII features specific wheel lug patterns essential for proper wheel fitment. Understanding the lug pattern, defined by the lug count and pitch circle diameter (PCD), along with offset (ET) and center bore dimensions, ensures secure mounting and optimal wheel alignment.\n\nTypically, the Bonneville VIII uses a 5-lug pattern with a PCD suited to its design parameters. Wheel offset values (ET) vary by model year and can affect clearance and handling. Center bore sizes ensure the wheel mounts precisely to the hub, eliminating vibrations.\n\nOur year-sorted Pontiac Bonneville VIII wheel lug pattern catalog provides precise bolt pattern, offset, and center bore specifications. This makes selecting the correct rim sizes straightforward, ensuring compatibility and performance for your Bonneville VIII.\n\nConsulting accurate Pontiac wheel lug pattern data avoids fitting errors. This reference guides enthusiasts and technicians to match rims while considering lug pattern, ET offset, and center bore for a safe and reliable wheel upgrade.
| Make / model / trim | Year | Tire | Rim width (in) | Rim diam. (in) | Bolt pattern | Offset ET | Bore DIA | Mounting |
|---|---|---|---|---|---|---|---|---|
| Pontiac Bonneville VIII 3.8i | 2005 | 225/60R16 | 7.5 | 16 | 5×115 | 40 | 70.3 | 1/2 |
| Pontiac Bonneville VIII 3.8i | 2004 | 225/60R16 | 7.5 | 16 | 5×115 | 40 | 70.3 | 1/2 |
| Pontiac Bonneville VIII 3.8i | 2003 | 225/60R16 | 7.5 | 16 | 5×115 | 40 | 70.3 | 1/2 |
| Pontiac Bonneville VIII 3.8i | 2002 | 225/60R16 | 7.5 | 16 | 5×115 | 40 | 70.3 | 1/2 |
| Pontiac Bonneville VIII 3.8i | 2001 | 225/60R16 | 7.5 | 16 | 5×115 | 40 | 70.3 | 1/2 |
| Pontiac Bonneville VIII 3.8i | 2000 | 225/60R16 | 7.5 | 16 | 5×115 | 40 | 70.3 | 1/2 |
| Pontiac Bonneville VIII 3.8i | 1999 | 225/60R16 | 7.5 | 16 | 5×115 | 40 | 70.3 | 1/2 |
FAQ
- What is the typical lug pattern for the Pontiac Bonneville VIII?
- The Pontiac Bonneville VIII generally uses a 5-lug pattern with a pitch circle diameter (PCD) specific to model years, commonly around 5x115 mm.
- Why is the offset (ET) important for Pontiac Bonneville VIII wheels?
- The offset (ET) affects wheel positioning relative to the hub and suspension, influencing clearance and handling; correct ET ensures proper fitment and vehicle safety.
- How does the center bore impact wheel fitment on a Pontiac Bonneville VIII?
- The center bore must match the hub diameter to ensure the wheel centers correctly on the axle, preventing vibrations and ensuring secure mounting.
Tire size calculatorShow
Compare two tire sizes — diameter, speedometer error, and clearance change.
| Size 1 | Size 2 | Diff | Diff(%) | |
|---|---|---|---|---|
| Diameter | 25.0" | 25.4" | 0.5" | 1.89% |
| Width | 7.7" | 8.5" | 0.8" | 10.26% |
| Circumference | 78.4" | 79.9" | 1.5" | 1.86% |
| Profile height | 5.0" | 4.2" | -0.7" | -15.08% |
| Turnover per mile | 807 | 793 | 14 | -1.73% |
| Clearance | - | - | +0.2" | - |






Speedometer Error
(First wheel OEM size)
| Reading | 20 mph | 30 mph | 40 mph | 50 mph | 60 mph | 70 mph | 80 mph | 90 mph |
|---|---|---|---|---|---|---|---|---|
| Actual | 20.4 | 30.5 | 40.7 | 50.9 | 61.1 | 71.2 | 81.4 | 91.6 |
