Pontiac Trans Sport Wheel Lug Pattern, Offset, and Rim Size Reference
The Pontiac Trans Sport features specific wheel lug patterns defined by lug count and pitch circle diameter (PCD), essential for proper wheel fitment. This reference provides detailed lug patterns alongside offset (ET) and center bore measurements, helping you select compatible wheels.\n\nPontiac Trans Sport wheel lug patterns vary by production year, typically offering a consistent lug count but occasionally differing in PCD dimensions. Offset values (ET) and center bore sizes are crucial for ensuring wheels mount correctly without clearance issues.\n\nOur site provides a year-sorted table outlining all relevant dimensions for the Pontiac Trans Sport, including rim size context to guide you in choosing the right wheels. Proper fitment maintains vehicle safety and performance while preserving the original driving experience.\n\nConsult this detailed lug pattern catalog and fitment reference to confidently upgrade or replace your Pontiac Trans Sport wheels with components that match factory specifications.
| Make / model / trim | Year | Tire | Rim width (in) | Rim diam. (in) | Bolt pattern | Offset ET | Bore DIA | Mounting |
|---|---|---|---|---|---|---|---|---|
| Pontiac Trans Sport 3.1 | 2001 | 205/70R15 | 7 | 15 | 5×115 | 48 | 70.3 | M12*1,5 |
| Pontiac Trans Sport 3.1 | 2000 | 205/70R15 | 7 | 15 | 5×115 | 48 | 70.3 | M12*1,5 |
| Pontiac Trans Sport 3.1 | 1999 | 205/70R15 | 7 | 15 | 5×115 | 48 | 70.3 | M12*1,5 |
| Pontiac Trans Sport 3.1 | 1998 | 205/70R15 | 7 | 15 | 5×115 | 48 | 70.3 | M12*1,5 |
| Pontiac Trans Sport 3.4 | 1998 | 205/70R15 | 7 | 15 | 5×115 | 48 | 70.3 | M12*1,5 |
| Pontiac Trans Sport 3.1 | 1997 | 205/70R15 | 7 | 15 | 5×115 | 48 | 70.3 | M12*1,5 |
| Pontiac Trans Sport 3.4 | 1997 | 205/70R15 | 7 | 15 | 5×115 | 48 | 70.3 | M12*1,5 |
| Pontiac Trans Sport 3.1 | 1996 | 205/70R15 | 7 | 15 | 5×115 | 48 | 70.3 | M12*1,5 |
| Pontiac Trans Sport 3.1 | 1995 | 205/70R15 | 7 | 15 | 5×115 | 48 | 70.3 | M12*1,5 |
| Pontiac Trans Sport 3.1 | 1994 | 205/70R15 | 7 | 15 | 5×115 | 48 | 70.3 | M12*1,5 |
| Pontiac Trans Sport 3.1 | 1993 | 205/70R15 | 7 | 15 | 5×115 | 48 | 70.3 | M12*1,5 |
| Pontiac Trans Sport 3.1 | 1992 | 205/70R15 | 7 | 15 | 5×115 | 48 | 70.3 | M12*1,5 |
| Pontiac Trans Sport 3.1 | 1991 | 205/70R15 | 7 | 15 | 5×115 | 48 | 70.3 | M12*1,5 |
| Pontiac Trans Sport 3.1 | 1990 | 205/70R15 | 7 | 15 | 5×115 | 48 | 70.3 | M12*1,5 |
| Pontiac Trans Sport 3.1 | 1989 | 205/70R15 | 7 | 15 | 5×115 | 48 | 70.3 | M12*1,5 |
FAQ
- What is the typical lug pattern for the Pontiac Trans Sport?
- The Pontiac Trans Sport usually features a 5-lug pattern with a pitch circle diameter (PCD) of 110 mm, but this can vary slightly depending on the production year.
- Why is the offset (ET) important for wheel fitment on the Trans Sport?
- Offset determines how far the wheel sits inward or outward relative to the hub, affecting clearance with suspension and fenders. Using the correct ET ensures proper wheel positioning and safe operation.
- Where can I find the center bore size for Pontiac Trans Sport wheels?
- Center bore specifications for Pontiac Trans Sport wheels are listed in our year-sorted wheel fitment reference table to help you identify the compatible wheel hub diameter.
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 |
