Chevrolet Astro Bus Wheel Lug Patterns, Offset, and Center Bore Reference
The Chevrolet Astro Bus requires specific wheel lug bolt patterns to ensure proper fitment and safety. The typical bolt pattern for the Astro Bus is a 5×120 mm PCD (pitch circle diameter), which denotes five lug holes evenly spaced on a 120 millimeter diameter circle.\n\nAlongside the bolt pattern, wheel offset (ET) and center bore dimensions are key specifications to verify. Chevrolet Astro Bus models generally maintain an offset ET range suitable for OEM and aftermarket wheels to preserve suspension clearance and handling integrity. The center bore diameter ensures the wheel hubs fit snugly without the need for additional adapters.\n\nOur year-sorted reference table catalogs the Astro Bus wheel lug patterns, offsets, center bore sizes, and common rim diameters, assisting vehicle owners and wheel suppliers in selecting compatible wheels. This information helps maintain correct wheel positioning and overall vehicle safety, especially when upgrading or replacing wheels.\n\nUsing the correct lug pattern and matching offset and center bore specs prevents issues such as wheel vibration, uneven tire wear, and compromised braking performance. Refer to our Chevrolet wheel lug pattern catalog for detailed fitment specifics by model year.
| Make / model / trim | Year | Tire | Rim width (in) | Rim diam. (in) | Bolt pattern | Offset ET | Bore DIA | Mounting |
|---|---|---|---|---|---|---|---|---|
| Chevrolet Astro Bus 4.3 | 2005 | 235/65R16 | 8 | 16 | 6×139.7 | 20 | 78.1 | M14*1,5 |
| Chevrolet Astro Bus 4.3 AWD | 2005 | 235/65R16 | 8 | 16 | 6×139.7 | 20 | 78.1 | M14*1,5 |
| Chevrolet Astro Bus 4.3 | 2004 | 235/65R16 | 8 | 16 | 6×139.7 | 20 | 78.1 | M14*1,5 |
| Chevrolet Astro Bus 4.3 AWD | 2004 | 235/65R16 | 8 | 16 | 6×139.7 | 20 | 78.1 | M14*1,5 |
| Chevrolet Astro Bus 4.3 | 2003 | 235/65R16 | 8 | 16 | 6×139.7 | 20 | 78.1 | M14*1,5 |
| Chevrolet Astro Bus 4.3 AWD | 2003 | 235/65R16 | 8 | 16 | 6×139.7 | 20 | 78.1 | M14*1,5 |
| Chevrolet Astro Bus 4.3 | 2002 | 235/65R16 | 8 | 16 | 6×139.7 | 20 | 78.1 | M14*1,5 |
| Chevrolet Astro Bus 4.3 AWD | 2002 | 235/65R16 | 8 | 16 | 6×139.7 | 20 | 78.1 | M14*1,5 |
| Chevrolet Astro Bus 4.3 | 2001 | 235/65R16 | 8 | 16 | 6×139.7 | 20 | 78.1 | M14*1,5 |
| Chevrolet Astro Bus 4.3 AWD | 2001 | 235/65R16 | 8 | 16 | 6×139.7 | 20 | 78.1 | M14*1,5 |
| Chevrolet Astro Bus 4.3 | 2000 | 235/65R16 | 8 | 16 | 6×139.7 | 20 | 78.1 | M14*1,5 |
| Chevrolet Astro Bus 4.3 AWD | 2000 | 235/65R16 | 8 | 16 | 6×139.7 | 20 | 78.1 | M14*1,5 |
| Chevrolet Astro Bus 4.3 | 1999 | 235/65R16 | 8 | 16 | 6×139.7 | 20 | 78.1 | M14*1,5 |
| Chevrolet Astro Bus 4.3 AWD | 1999 | 235/65R16 | 8 | 16 | 6×139.7 | 20 | 78.1 | M14*1,5 |
| Chevrolet Astro Bus 4.3 | 1998 | 235/65R16 | 8 | 16 | 6×139.7 | 20 | 78.1 | M14*1,5 |
| Chevrolet Astro Bus 4.3 AWD | 1998 | 235/65R16 | 8 | 16 | 6×139.7 | 20 | 78.1 | M14*1,5 |
| Chevrolet Astro Bus 4.3 | 1997 | 235/65R16 | 8 | 16 | 6×139.7 | 20 | 78.1 | M14*1,5 |
| Chevrolet Astro Bus 4.3 AWD | 1997 | 235/65R16 | 8 | 16 | 6×139.7 | 20 | 78.1 | M14*1,5 |
| Chevrolet Astro Bus 4.3 | 1996 | 235/65R16 | 8 | 16 | 6×139.7 | 20 | 78.1 | M14*1,5 |
| Chevrolet Astro Bus 4.3 AWD | 1996 | 235/65R16 | 8 | 16 | 6×139.7 | 20 | 78.1 | M14*1,5 |
| Chevrolet Astro Bus 4.3 | 1995 | 235/65R16 | 8 | 16 | 6×139.7 | 20 | 78.1 | M14*1,5 |
| Chevrolet Astro Bus 4.3 AWD | 1995 | 235/65R16 | 8 | 16 | 6×139.7 | 20 | 78.1 | M14*1,5 |
| Chevrolet Astro Bus 4.3 | 1994 | 235/65R16 | 8 | 16 | 6×139.7 | 20 | 78.1 | M14*1,5 |
| Chevrolet Astro Bus 4.3 AWD | 1994 | 235/65R16 | 8 | 16 | 6×139.7 | 20 | 78.1 | M14*1,5 |
FAQ
- What is the Chevrolet Astro Bus wheel bolt pattern?
- The Chevrolet Astro Bus typically uses a 5×120 mm bolt pattern for wheel mounting.
- Why is offset important for Chevrolet Astro Bus wheels?
- Offset (ET) affects wheel positioning relative to the hub and suspension, impacting handling and clearance. Using the correct offset ensures proper fit and vehicle safety.
- Can I use wheels with a different center bore on my Chevrolet Astro Bus?
- Wheels must have a center bore equal to or larger than the hub diameter; otherwise, hub-centric rings are needed to avoid vibrations and ensure 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 |