2021 GMC Yukon XL Bolt Pattern
Checking fitment for your vehicle? Below you will find the factory bolt pattern (also known as the lug pattern) for the 2021 GMC Yukon XL, along with offset and center bore data.
| Bolt Pattern (Lug Pattern) | 6x139.7 (6x5.5") |
|---|---|
| Lug Nut / Bolt Size | 14x1.5 |
| Center Bore (CB) | 78.1 mm |
| Offset (ET) | 20-30 |
| Torque Specs | 100 ft-lbs (135 Nm) |
Imperial Match: 6x139.7 is commonly referred to as 6x5.5" in US Standard.
2021 Yukon XL — Year-Specific Fitment Context
The 2021 GMC Yukon XL is in year 7 of 10 using the 6x139.7 pattern (2015–2024). Wheels from any 2015–2024 GMC Yukon XL are cross-compatible with the 2021 model.
GMC Yukon XL Bolt Pattern by Year
The table below shows how the Yukon XL's wheel specifications have changed over the years. The 2021 model year is highlighted.
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 2021 GMC Yukon XL
For the 2021 GMC Yukon XL, the 6x139.7 bolt pattern and 78.1mm center bore are critical. Aftermarket wheels often have a larger center bore (e.g., 78.3mm or 106.1mm), requiring hub-centric rings to prevent vibration and ensure proper load transfer. The offset range is 20-30mm; deviating outside this can cause rubbing or premature bearing wear. Always use lug nuts with the correct 14x1.5 thread pitch and a conical (60-degree) or ball seat matching the wheel's seat type. Never use incorrect seat types—this can lead to wheel loosening. Re-torque after 50-100 miles of driving.
Historical Fitment Data Reference
In our dataset, GMC Yukon XL appears from 2015 to 2024 (10 model years). Across recorded model years, this model generally keeps the same bolt pattern.
- Observed bolt-pattern variants for this model: 1
- Observed center-bore variants for this model: 1
- Observed lug-size variants for this model: 1
- Observed total offset span across years: 50.0 mm
Quick Tips & Safety Warnings
- ✅ Re-torque lug nuts to 140 ft-lbs after 50-100 miles of driving to ensure proper seating.
- ✅ Avoid wheels with offset below 20mm (too aggressive) or above 30mm (too tucked) to prevent rubbing or brake clearance issues.
- ✅ If using aftermarket wheels, verify the center bore and use hub-centric rings if the bore is larger than 78.1mm.
- ⚠️ This fitment uses a wide offset range. Check brake clearance and fender clearance before buying wheels.
- ⚠️ Torque lugs in a star pattern to 100 ft-lbs (135 Nm), then re-check torque after 50-100 km (30-60 miles).
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2021 GMC Yukon XL — Frequently Asked Questions
What is the bolt pattern for a 2021 GMC Yukon XL?
The 2021 GMC Yukon XL uses a 6x139.7 bolt pattern (also called lug pattern or PCD). The center bore is 78.1mm and the offset is 20-30mm.
What other years of GMC Yukon XL have the same bolt pattern as the 2021?
The GMC Yukon XL uses the 6x139.7 pattern from 2015 through 2024. Wheels from any of these model years are dimensionally compatible with the 2021, provided the offset and center bore also match.
Do 2021 GMC Yukon XLs use lug bolts or lug nuts?
The 2021 Yukon XL requires 14x1.5 hardware. Check your specific trim to ensure you use the correct conical or spherical seating.
What is the PCD for a 2021 GMC Yukon XL?
PCD stands for Pitch Circle Diameter, which is the same as the bolt pattern. For the 2021 Yukon XL, the PCD is 6x139.7.
Can I use spacers on my 2021 GMC Yukon XL?
Yes, but ensure the wheel spacers match the 6x139.7 bolt pattern and 78.1mm center bore. Also verify that you have enough thread engagement for your 14x1.5 hardware.
How do I measure the bolt pattern on my 2021 GMC?
The 2021 Yukon XL uses a 6x139.7 pattern. For 4, 6, or 8-lug wheels, measure center-to-center across opposite holes. For 5-lug, measure from the center of one hole to the back of the opposite hole.
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