2021 Ram 1500 Crew 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 Crew 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 Crew Cab — Year-Specific Fitment Context
The 2021 Ram 1500 Crew Cab is in year 3 of 7 using the 6x139.7 pattern (2019–2025). Wheels from any 2019–2025 Ram 1500 Crew Cab are cross-compatible with the 2021 model. Across its full production run (2011–2025), the 1500 Crew Cab has also used: 5x139.7.
Ram 1500 Crew Cab Bolt Pattern by Year
The table below shows how the 1500 Crew 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 |
| 2025 | 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 Crew Cab
The 2021 Ram 1500 Crew Cab uses a 6x139.7 bolt pattern with a 77.8mm center bore. When selecting aftermarket wheels, ensure hub-centric rings are used to match the bore precisely, preventing vibrations. The factory offset is 19mm; deviations beyond ±10mm may cause clearance issues with brakes or suspension. Always verify lug nut thread pitch (14x1.5) and seat type—factory uses cone seat, but aftermarket wheels may require ball seat or shank-style nuts. Improper lug nut selection can lead to wheel loosening. Wheels from 2019–2025 Ram 1500 Crew Cab models are direct fit.
Historical Fitment Data Reference
In our dataset, Ram 1500 Crew Cab appears from 2011 to 2025 (15 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 with a center bore larger than 77.8mm without hub-centric rings.
- ✅ Check offset carefully; lower offsets (e.g., 0mm) may require trimming or lift kits.
- ⚠️ 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 Crew Cab — Frequently Asked Questions
What is the bolt pattern for a 2021 Ram 1500 Crew Cab?
The 2021 Ram 1500 Crew 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 Crew Cab have the same bolt pattern as the 2021?
The Ram 1500 Crew Cab uses the 6x139.7 pattern from 2019 through 2025. Wheels from any of these model years are dimensionally compatible with the 2021, provided the offset and center bore also match.
What lug nut size does the 2021 Ram 1500 Crew Cab use?
The 2021 Ram 1500 Crew Cab uses 14x1.5 lug nuts. Always verify the thread pitch and seat type (cone, ball, or flat) match your aftermarket wheels.
What is the center bore of a 2021 Ram 1500 Crew Cab?
The factory center bore (hub bore) for the 2021 Ram 1500 Crew Cab is 77.8mm. If your aftermarket wheels have a larger hub bore, you will need hub-centric rings to prevent vibration.
How tight should I torque the lug nuts on a 2021 Ram 1500 Crew 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.
Do 2021 Ram 1500 Crew Cabs use lug bolts or lug nuts?
The 2021 1500 Crew Cab requires 14x1.5 hardware. Check your specific trim to ensure you use the correct conical or spherical seating.
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