2008 Dodge Ram 1500 Mega Cab Bolt Pattern
Checking fitment for your vehicle? Below you will find the factory bolt pattern (also known as the lug pattern) for the 2008 Dodge Ram 1500 Mega Cab, along with offset and center bore data.
| Bolt Pattern (Lug Pattern) | 5x139.7 (5x5.5") |
|---|---|
| Lug Nut / Bolt Size | 9/16 |
| Center Bore (CB) | 77.8 mm |
| Offset (ET) | 19 |
| Torque Specs | 140 ft-lbs (190 Nm) |
2008 Ram 1500 Mega Cab — Year-Specific Fitment Context
The 2008 model year is the final year of the Dodge Ram 1500 Mega Cab's 5x139.7 bolt pattern run (since 2006). Wheels from any 2006–2008 Dodge Ram 1500 Mega Cab are cross-compatible with the 2008 model.
Dodge Ram 1500 Mega Cab Bolt Pattern by Year
The table below shows how the Ram 1500 Mega Cab's wheel specifications have changed over the years. The 2008 model year is highlighted.
Fitment Notes
The 2008 Dodge Ram 1500 Mega Cab has a bolt pattern of 5x139.7.
Imperial Conversion: This bolt pattern is commonly referred to as 5x5.5" in imperial units. When searching for aftermarket wheels, you may see them listed as 5x5.5".
This means it is a 5 lug pattern with a circle diameter of 139.7mm. When shopping for aftermarket wheels, ensure the "lug pattern" or "PCD" matches these numbers.
Year-to-Year Fitment Context
In our dataset, Dodge Ram 1500 Mega Cab appears from 2006 to 2008 (3 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: 0.0 mm
5x139.7 Pattern Context
This bolt pattern appears on 261 vehicles in our current database and is considered moderately common.
Examples of other vehicles using 5x139.7:
2008 Dodge Ram 1500 Mega Cab — Frequently Asked Questions
What is the bolt pattern for a 2008 Dodge Ram 1500 Mega Cab?
The 2008 Dodge Ram 1500 Mega Cab uses a 5x139.7 bolt pattern (also called lug pattern or PCD). The center bore is 77.8mm and the offset is 19mm.
What other years of Dodge Ram 1500 Mega Cab have the same bolt pattern as the 2008?
The Dodge Ram 1500 Mega Cab uses the 5x139.7 pattern from 2006 through 2008. Wheels from any of these model years are dimensionally compatible with the 2008, provided the offset and center bore also match.
Can I put aftermarket wheels on my 2008 Dodge Ram 1500 Mega Cab?
Absolutely. Just ensure the aftermarket wheels have a 5x139.7 bolt pattern, an offset near 19mm, and a center bore of at least 77.8mm (using hub rings if larger).
Can I use spacers on my 2008 Dodge Ram 1500 Mega Cab?
Yes, but ensure the wheel spacers match the 5x139.7 bolt pattern and 77.8mm center bore. Also verify that you have enough thread engagement for your 9/16 hardware.
What is the PCD for a 2008 Dodge Ram 1500 Mega Cab?
PCD stands for Pitch Circle Diameter, which is the same as the bolt pattern. For the 2008 Ram 1500 Mega Cab, the PCD is 5x139.7.
What is the center bore of a 2008 Dodge Ram 1500 Mega Cab?
The factory center bore (hub bore) for the 2008 Dodge Ram 1500 Mega Cab is 77.8mm. If your aftermarket wheels have a larger hub bore, you will need hub-centric rings to prevent vibration.
Fitment Checklist Before You Buy Wheels
- Torque lugs in a star pattern to 140 ft-lbs (190 Nm), then re-check torque after 50-100 km (30-60 miles).
Editorial Fitment Notes
Dodge Ram 1500 Mega Cab is generally consistent in bolt-pattern records across model years, but offset and hardware should still be validated before purchase.
- Observed production years in our database: 2006-2008 (3 model years).
- Observed bolt-pattern variants: 1 (5x139.7).
- Observed total offset span across years: 0.0 mm.
- Observed center-bore variants: 1 | lug-size variants: 1.
Data Quality & Review
Source note: Compiled from manufacturer fitment references, historical wheel data, and internal normalization rules.
Last reviewed: 2026-05-26 | Reviewed by: Bolt Pattern HQ Editorial Team
If you find a discrepancy for 2008 Dodge Ram 1500 Mega Cab, please report it via our About page contact so we can verify and update this record.