2018 Ram 2500 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 2018 Ram 2500 Crew Cab, along with offset and center bore data.
| Bolt Pattern (Lug Pattern) | 8x165.1 (8x6.5") |
|---|---|
| Lug Nut / Bolt Size | 14x1.5 |
| Center Bore (CB) | 121.3 mm |
| Offset (ET) | 43 |
| Torque Specs | 140 ft-lbs (190 Nm) |
Imperial Match: 8x165.1 is commonly referred to as 8x6.5" in US Standard.
2018 2500 Crew Cab — Year-Specific Fitment Context
The 2018 Ram 2500 Crew Cab is in year 8 of 14 using the 8x165.1 pattern (2011–2024). Wheels from any 2011–2024 Ram 2500 Crew Cab are cross-compatible with the 2018 model.
Ram 2500 Crew Cab Bolt Pattern by Year
The table below shows how the 2500 Crew Cab's wheel specifications have changed over the years. The 2018 model year is highlighted.
| Year | Bolt Pattern | Center Bore | Offset |
|---|---|---|---|
| 2011 | 8x165.1 | 121.3 | 25 |
| 2012 | 8x165.1 | 121.3 | 43 |
| 2013 | 8x165.1 | 121.3 | 43 |
| 2014 | 8x165.1 | 121.3 | 43 |
| 2015 | 8x165.1 | 121.3 | 43 |
| 2016 | 8x165.1 | 121.3 | 43 |
| 2017 | 8x165.1 | 121.3 | 43 |
| ▸ 2018 | 8x165.1 | 121.3 | 43 |
| 2019 | 8x165.1 | 121.3 | 43 |
| 2020 | 8x165.1 | 121.3 | 43 |
| 2021 | 8x165.1 | 121.3 | 43 |
| 2022 | 8x165.1 | 121.3 | 43 |
| 2024 | 8x165.1 | 121.3 | 43 |
8x165.1 Pattern Context
This bolt pattern appears on 846 vehicles in our current database and is considered common.
Examples of other vehicles using 8x165.1:
Expert Buying Guide for 2018 Ram 2500 Crew Cab
For your 2018 Ram 2500 Crew Cab, the 8x165.1 bolt pattern is shared with 2011–2024 models, ensuring cross-compatibility. However, the 121.3mm center bore is critical: aftermarket wheels often have a larger bore, requiring hub-centric rings to prevent vibrations and ensure proper load distribution. Offset is sensitive; the factory 43mm offset maintains correct scrub radius and suspension geometry. Deviating significantly can cause rubbing or premature bearing wear. Always use 14x1.5 lug nuts with the correct seat type—factory wheels use cone seats; aftermarket may require ball or shank-style nuts. Improper seating leads to loosening. Re-torque after 50–100 miles.
Historical Fitment Data Reference
In our dataset, Ram 2500 Crew Cab appears from 2011 to 2024 (13 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: 2
- Observed total offset span across years: 18.0 mm
Quick Tips & Safety Warnings
- ✅ Re-torque lug nuts to 140 ft-lbs after 50–100 miles of driving.
- ✅ If using aftermarket wheels, verify hub bore and use hub-centric rings if bore > 121.3mm.
- ✅ Avoid offsets below 35mm or above 50mm to prevent rubbing on control arms or fenders.
- ⚠️ Torque lugs in a star pattern to 140 ft-lbs (190 Nm), then re-check torque after 50-100 km (30-60 miles).
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2018 Ram 2500 Crew Cab — Frequently Asked Questions
What is the bolt pattern for a 2018 Ram 2500 Crew Cab?
The 2018 Ram 2500 Crew Cab uses a 8x165.1 bolt pattern (also called lug pattern or PCD). The center bore is 121.3mm and the offset is 43mm.
What other years of Ram 2500 Crew Cab have the same bolt pattern as the 2018?
The Ram 2500 Crew Cab uses the 8x165.1 pattern from 2011 through 2024. Wheels from any of these model years are dimensionally compatible with the 2018, provided the offset and center bore also match.
How tight should I torque the lug nuts on a 2018 Ram 2500 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.
What is the center bore of a 2018 Ram 2500 Crew Cab?
The factory center bore (hub bore) for the 2018 Ram 2500 Crew Cab is 121.3mm. If your aftermarket wheels have a larger hub bore, you will need hub-centric rings to prevent vibration.
What lug nut size does the 2018 Ram 2500 Crew Cab use?
The 2018 Ram 2500 Crew Cab uses 14x1.5 lug nuts. Always verify the thread pitch and seat type (cone, ball, or flat) match your aftermarket wheels.
Why is matching the 121.3mm center bore important for the 2018 2500 Crew Cab?
The 121.3mm 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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