Chevrolet TrailBlazer EXT Wheel Interchange
Compare Chevrolet TrailBlazer EXT wheel specifications across 5 model years. Review bolt patterns, center bore, thread size, OEM wheel dimensions, and the years that share the same recorded mounting specs.
On this page
Compare Chevrolet TrailBlazer EXT Years
Wheel Specifications by Year
| Year | Bolt pattern | Center bore | Thread size | OEM rim sizes | Offset | Details |
|---|---|---|---|---|---|---|
| 2006 | 6×127 | 77.8 mm | M12×1.5 | 17×7 | 50 mm | Open 2006 page |
| 2005 | 6×127 | 77.8 mm | M12×1.5 | 17×7 | 50 mm | Open 2005 page |
| 2004 | 6×127 | 77.8 mm | M12×1.5 | 17×7 | 50 mm | Open 2004 page |
| 2003 | 6×127 | 77.8 mm | M12×1.5 | 17×7 | 50 mm | Open 2003 page |
| 2002 | 6×127 | 77.8 mm | M12×1.5 | 17×7 | 50 mm | Open 2002 page |
2006
- Bolt pattern
- 6×127
- Center bore
- 77.8 mm
- Thread size
- M12×1.5
- OEM rim sizes
- 17×7
- Offset
- 50 mm
- Details
- Open 2006 page
2005
- Bolt pattern
- 6×127
- Center bore
- 77.8 mm
- Thread size
- M12×1.5
- OEM rim sizes
- 17×7
- Offset
- 50 mm
- Details
- Open 2005 page
2004
- Bolt pattern
- 6×127
- Center bore
- 77.8 mm
- Thread size
- M12×1.5
- OEM rim sizes
- 17×7
- Offset
- 50 mm
- Details
- Open 2004 page
2003
- Bolt pattern
- 6×127
- Center bore
- 77.8 mm
- Thread size
- M12×1.5
- OEM rim sizes
- 17×7
- Offset
- 50 mm
- Details
- Open 2003 page
2002
- Bolt pattern
- 6×127
- Center bore
- 77.8 mm
- Thread size
- M12×1.5
- OEM rim sizes
- 17×7
- Offset
- 50 mm
- Details
- Open 2002 page
Is matching bolt pattern enough?
A matching Chevrolet TrailBlazer EXT bolt pattern is only the first check. The wheel still has to clear the hub, brakes, and suspension, sit at a usable offset, and use the correct fasteners and tire package.
- Center bore must not be smaller than the hub. A larger bore may need hub-centric rings; it is not an automatic fit.
- Offset and backspacing change inner and outer clearance even when diameter matches.
- Wheel width, brake clearance, and suspension travel are trim-specific and are not proven by bolt pattern alone.
- Lug-seat geometry, thread size, load rating, tire diameter, and TPMS compatibility still need a physical check.
Same recorded specifications are a candidate for further verification, not confirmation that wheels physically fit.
Frequently Asked Questions
What bolt patterns has the Chevrolet TrailBlazer EXT used?
Recorded Chevrolet TrailBlazer EXT bolt patterns for 2002–2006 are 6×127. A year may have more than one configuration, so confirm the year page before buying wheels.
Do all TrailBlazer EXT years use the same wheel specs?
The published TrailBlazer EXT years on this page share the same recorded core mounting specs (6×127 · 77.8 mm · M12×1.5). Wheel diameter, width, offset, brake clearance, and load rating must still be checked.
How can I compare two TrailBlazer EXT years?
Use Compare Years at the top of this page to select a donor year and an installed-on year. The result compares recorded bolt pattern, center bore, thread size, rim diameter, rim width, offset, backspacing, and tire size, then links to both year pages and the wheel calculator.
Is matching the bolt pattern enough?
No. Matching bolt pattern alone is not enough. Center bore, offset, backspacing, wheel width, brake and suspension clearance, lug-seat geometry, load rating, tire diameter, and TPMS compatibility must still be verified.
What should I check before installing wheels from another year?
Confirm the recorded core mounting specs, then verify wheel width, offset/backspacing, brake and suspension clearance, lug-seat geometry, load rating, tire diameter, and TPMS compatibility. This page reports recorded specifications and does not certify installation.