2021 Ram 1500 Quad Cab Bolt Pattern
Checking fitment for your vehicle? Below you will find the factory bolt pattern (also known as the lug pattern) for the 2021 Ram 1500 Quad Cab, along with offset and center bore data.
| Bolt Pattern (Lug Pattern) | 6x139.7 (6x5.5") |
|---|---|
| Lug Nut / Bolt Size | 14x1.5 |
| Center Bore (CB) | 77.8 mm |
| Offset (ET) | 19 |
| Torque Specs | 100 ft-lbs (135 Nm) |
Imperial Match: 6x139.7 is commonly referred to as 6x5.5" in US Standard.
2021 1500 Quad Cab — Year-Specific Fitment Context
The 2021 Ram 1500 Quad Cab is in year 3 of 6 using the 6x139.7 pattern (2019–2024). Wheels from any 2019–2024 Ram 1500 Quad Cab are cross-compatible with the 2021 model. Across its full production run (2011–2024), the 1500 Quad Cab has also used: 5x139.7.
Ram 1500 Quad Cab Bolt Pattern by Year
The table below shows how the 1500 Quad Cab's wheel specifications have changed over the years. The 2021 model year is highlighted.
| Year | Bolt Pattern | Center Bore | Offset |
|---|---|---|---|
| 2011 | 5x139.7 | 77.8 | 19 |
| 2012 | 5x139.7 | 77.8 | 19 |
| 2013 | 5x139.7 | 77.8 | 19 |
| 2014 | 5x139.7 | 77.8 | 19 |
| 2015 | 5x139.7 | 77.8 | 19 |
| 2016 | 5x139.7 | 77.8 | 19 |
| 2017 | 5x139.7 | 77.8 | 19 |
| 2018 | 5x139.7 | 77.8 | 19 |
| 2019 | 6x139.7 | 77.8 | 19 |
| 2020 | 6x139.7 | 77.8 | 19 |
| ▸ 2021 | 6x139.7 | 77.8 | 19 |
| 2022 | 6x139.7 | 77.8 | 19 |
| 2023 | 6x139.7 | 77.8 | 19 |
| 2024 | 6x139.7 | 77.8 | 19 |
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 Ram 1500 Quad Cab
For your 2021 Ram 1500 Quad Cab, the 6x139.7 bolt pattern is shared with 2019–2024 models, ensuring cross-compatibility. The 77.8mm center bore is critical: aftermarket wheels with larger bores require hub-centric rings to prevent vibration and ensure proper load distribution. Offset is sensitive; the factory 19mm offset maintains suspension geometry and brake clearance. Deviating beyond ±10mm may cause rubbing or handling issues. Always use 14x1.5 lug nuts with the correct seat type—factory wheels use cone seats; aftermarket may require ball or tapered seats. Mismatched seats can lead to wheel loosening. Safety first: verify all specs before installation.
Historical Fitment Data Reference
In our dataset, Ram 1500 Quad Cab appears from 2011 to 2024 (14 model years). Across model years, this model appears with 2 bolt patterns (5x139.7, 6x139.7).
- Observed bolt-pattern variants for this model: 2
- Observed center-bore variants for this model: 1
- 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 130-140 ft-lbs after 50 miles of driving to ensure proper seating.
- ✅ Avoid using wheels with a center bore larger than 77.8mm without hub-centric rings to prevent vibration.
- ✅ Check brake caliper clearance when changing offset; positive offsets (higher than 19mm) may contact suspension components.
- ⚠️ Torque lugs in a star pattern to 100 ft-lbs (135 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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2021 Ram 1500 Quad Cab — Frequently Asked Questions
What is the bolt pattern for a 2021 Ram 1500 Quad Cab?
The 2021 Ram 1500 Quad Cab uses a 6x139.7 bolt pattern (also called lug pattern or PCD). The center bore is 77.8mm and the offset is 19mm.
What other years of Ram 1500 Quad Cab have the same bolt pattern as the 2021?
The Ram 1500 Quad Cab uses the 6x139.7 pattern from 2019 through 2024. Wheels from any of these model years are dimensionally compatible with the 2021, provided the offset and center bore also match.
What does 19mm offset mean for the 2021 1500 Quad Cab?
An offset of 19mm means the wheel's mounting surface is 19mm away from its centerline. Changing this value drastically can affect suspension geometry and wheel bearing wear on your Ram.
Will wheels from another Ram fit my 2021 1500 Quad Cab?
Only if they share the exact same 6x139.7 bolt pattern, a compatible offset, and a center bore equal to or larger than 77.8mm.
What is the factory wheel offset for a 2021 Ram 1500 Quad Cab?
The OEM offset for the 2021 1500 Quad Cab is typically around 19mm. Depending on wheel width, a deviation of ±5mm is usually acceptable, but verify suspension clearance.
Why is matching the 77.8mm center bore important for the 2021 1500 Quad Cab?
The 77.8mm center bore ensures the wheel is perfectly centered on the hub. If the wheel is lug-centric instead of hub-centric, you may experience steering wheel vibration at highway speeds.
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