2005 Chevrolet Colorado Extended Cab Bolt Pattern
Checking fitment for your vehicle? Below you will find the factory bolt pattern (also known as the lug pattern) for the 2005 Chevrolet Colorado Extended Cab, along with offset and center bore data.
| Bolt Pattern (Lug Pattern) | 6x139.7 (6x5.5") |
|---|---|
| Lug Nut / Bolt Size | 12x1.5 |
| Center Bore (CB) | 100.3 mm |
| Offset (ET) | 33 |
| Torque Specs | 80 ft-lbs (108 Nm) |
Imperial Match: 6x139.7 is commonly referred to as 6x5.5" in US Standard.
2005 Colorado Extended Cab — Year-Specific Fitment Context
The 2005 Chevrolet Colorado Extended Cab is in year 2 of 9 using the 6x139.7 pattern (2004–2012). Wheels from any 2004–2012 Chevrolet Colorado Extended Cab are cross-compatible with the 2005 model. Across its full production run (2004–2022), the Colorado Extended Cab has also used: 6x120.
Chevrolet Colorado Extended Cab Bolt Pattern by Year
The table below shows how the Colorado Extended Cab's wheel specifications have changed over the years. The 2005 model year is highlighted.
| Year | Bolt Pattern | Center Bore | Offset |
|---|---|---|---|
| 2004 | 6x139.7 | 100.3 | 33 |
| ▸ 2005 | 6x139.7 | 100.3 | 33 |
| 2006 | 6x139.7 | 100.3 | 33 |
| 2007 | 6x139.7 | 100.3 | 33 |
| 2008 | 6x139.7 | 100.3 | 33 |
| 2009 | 6x139.7 | 100.3 | 33 |
| 2010 | 6x139.7 | 100.3 | 33 |
| 2011 | 6x139.7 | 100.3 | 33 |
| 2012 | 6x139.7 | 100.3 | 33 |
| 2015 | 6x120 | 66.9 | 33 |
| 2016 | 6x120 | 66.9 | 33 |
| 2017 | 6x120 | 66.9 | 33 |
| 2018 | 6x120 | 66.9 | 33 |
| 2019 | 6x120 | 66.9 | 33 |
| 2020 | 6x120 | 66.9 | 33 |
| 2021 | 6x120 | 66.9 | 33 |
| 2022 | 6x120 | 66.9 | 33 |
6x139.7 Pattern Context
This bolt pattern appears on 1067 vehicles in our current database and is considered common.
Examples of other vehicles using 6x139.7:
Expert Buying Guide for 2005 Chevrolet Colorado Extended Cab
For your 2005 Chevrolet Colorado Extended Cab, the 6x139.7 bolt pattern is shared with 2004–2012 models. The 100.3mm center bore is critical: aftermarket wheels often have a larger bore, requiring hub-centric rings to prevent vibration and ensure proper load transfer. Offset is sensitive; the factory 33mm offset maintains correct scrub radius and suspension geometry. Deviating more than ±10mm may cause rubbing or bearing stress. Always use 12x1.5 lug nuts with the correct seat type—factory uses a 60-degree conical seat. Using ball-seat or incorrect thread pitch nuts can lead to wheel loss. Verify lug nut engagement (minimum 6 full turns) and re-torque after 50 miles.
Historical Fitment Data Reference
In our dataset, Chevrolet Colorado Extended Cab appears from 2004 to 2022 (17 model years). Across model years, this model appears with 2 bolt patterns (6x120, 6x139.7).
- Observed bolt-pattern variants for this model: 2
- Observed center-bore variants for this model: 2
- Observed lug-size variants for this model: 2
- Observed total offset span across years: 0.0 mm
Quick Tips & Safety Warnings
- ✅ Re-torque lug nuts to 140 ft-lb after 50 miles of driving to account for wheel settling.
- ✅ Avoid using universal fit wheels without hub-centric rings; the 100.3mm bore is non-standard and requires specific rings.
- ✅ Check for brake caliper clearance when changing offset; the 33mm offset is tight, and a lower offset (more negative) may cause rubbing on the control arm.
- ⚠️ Verify thread pitch before installation; M12x1.25 and M12x1.5 are not interchangeable.
- ⚠️ Torque lugs in a star pattern to 80 ft-lbs (108 Nm), then re-check torque after 50-100 km (30-60 miles).
- ⚠️ This model has multiple bolt-pattern records across years. Match wheels to exact year/trim before purchase.
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2005 Chevrolet Colorado Extended Cab — Frequently Asked Questions
What is the bolt pattern for a 2005 Chevrolet Colorado Extended Cab?
The 2005 Chevrolet Colorado Extended Cab uses a 6x139.7 bolt pattern (also called lug pattern or PCD). The center bore is 100.3mm and the offset is 33mm.
What other years of Chevrolet Colorado Extended Cab have the same bolt pattern as the 2005?
The Chevrolet Colorado Extended Cab uses the 6x139.7 pattern from 2004 through 2012. Wheels from any of these model years are dimensionally compatible with the 2005, provided the offset and center bore also match.
What is the center bore of a 2005 Chevrolet Colorado Extended Cab?
The factory center bore (hub bore) for the 2005 Chevrolet Colorado Extended Cab is 100.3mm. If your aftermarket wheels have a larger hub bore, you will need hub-centric rings to prevent vibration.
What lug nut size does the 2005 Chevrolet Colorado Extended Cab use?
The 2005 Chevrolet Colorado Extended Cab uses 12x1.5 lug nuts. Always verify the thread pitch and seat type (cone, ball, or flat) match your aftermarket wheels.
Will wheels from another Chevrolet fit my 2005 Colorado Extended Cab?
Only if they share the exact same 6x139.7 bolt pattern, a compatible offset, and a center bore equal to or larger than 100.3mm.
How tight should I torque the lug nuts on a 2005 Chevrolet Colorado Extended Cab?
Refer to your owner's manual for exact specs, but always tighten the 12x1.5 hardware in a star or crisscross pattern. Re-torque after the first 50 miles of driving.
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