2020 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 2020 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.
2020 1500 Quad Cab — Year-Specific Fitment Context
The 2020 Ram 1500 Quad Cab is in year 2 of 6 using the 6x139.7 pattern (2019–2024). Wheels from any 2019–2024 Ram 1500 Quad Cab are cross-compatible with the 2020 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 2020 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 2020 Ram 1500 Quad Cab
For your 2020 Ram 1500 Quad Cab, the 77.8mm center bore is critical: aftermarket wheels with a larger bore require hub-centric rings to prevent vibration and ensure load is on the hub, not the lugs. The 19mm offset is sensitive; deviations affect scrub radius and clearance. Always use 14x1.5 lug nuts with the correct seat (factory is cone seat). Mismatched seats (e.g., ball seat) can cause wheel loosening. Verify bolt pattern 6x139.7 and consider that 2019–2024 Ram 1500 Quad Cab wheels are direct fit.
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 after 50-100 miles of driving to ensure proper seating.
- ✅ Avoid using wheels from 2011-2018 Ram 1500 Quad Cab (5x139.7 pattern) without adapters.
- ✅ Check brake caliper clearance when changing offset; a 0-19mm offset range is safe for most aftermarket wheels.
- ⚠️ 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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2020 Ram 1500 Quad Cab — Frequently Asked Questions
What is the bolt pattern for a 2020 Ram 1500 Quad Cab?
The 2020 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 2020?
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 2020, provided the offset and center bore also match.
How tight should I torque the lug nuts on a 2020 Ram 1500 Quad Cab?
Refer to your owner's manual for exact specs, but always tighten the 14x1.5 hardware in a star or crisscross pattern. Re-torque after the first 50 miles of driving.
How do I measure the bolt pattern on my 2020 Ram?
The 2020 1500 Quad Cab 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.
Can I use spacers on my 2020 Ram 1500 Quad Cab?
Yes, but ensure the wheel spacers match the 6x139.7 bolt pattern and 77.8mm center bore. Also verify that you have enough thread engagement for your 14x1.5 hardware.
What lug nut size does the 2020 Ram 1500 Quad Cab use?
The 2020 Ram 1500 Quad Cab uses 14x1.5 lug nuts. Always verify the thread pitch and seat type (cone, ball, or flat) match your aftermarket wheels.
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