Dodge Ram Bolt Pattern, Center Bore & Wheel Offset (2001–2004)
Dodge Ram wheel fitment: 5x139.7 bolt pattern, 77.8mm center bore (2001–2004).
- 5x139.7bolt pattern (PCD)
- 77.8 mmcenter bore
- M12x1.5 Nutwheel bolt / nut
- 5 guidesmodel years 2001–2004
Dodge Ram wheel specs by year and trim
| Year | Model / trim | Bolt pattern | Center bore | OE wheel |
|---|---|---|---|---|
| 2004 | Dodge Ram | 5x139.7 | 77.8 mm | 17x7.0J |
| 2004 | Dodge Ram SRT10 | 5x139.7 | 77.8 mm | 22x10.0J |
| 2003 | Dodge Ram | 5x139.7 | 77.8 mm | 17x7.0J |
| 2002 | Dodge Ram SRT10 | 5x139.7 | 77.8 mm | 22x10.0J |
| 2001 | Dodge Ram | 5x139.7 | 77.8 mm | 17x7.0J |
Factory wheel sizes on the Dodge Ram
Across the 5 Dodge Ram trims with a documented factory wheel, the OE diameter is 17-22 inch, width 7-10J. A forged wheel that keeps the 5x139.7 bolt pattern and the 77.8 mm hub bore and matches the factory offset listed on the model page bolts on without spacers or hub rings. Going one inch up in diameter with a lower-profile tyre keeps the rolling circumference inside the usual 1.5% tolerance; every extra 0.5J of width moves the outer lip about 6 mm outward at the same offset, and each 5 mm less offset moves the whole wheel 5 mm outward.
Vehicles With the Same Hub as the Dodge Ram (5x139.7, 77.8 mm Bore)
In our database, 16 other vehicle entries from 3 makes use exactly the same 5x139.7 bolt pattern and 77.8 mm center bore. Factory wheels from these cars bolt on and center on the hub without rings; offset and width still have to be checked.
5x139.7 is used by 0.9% of the vehicle pages in our English fitment guide (56 of 6,503); 50.0% of those also use a 77.8 mm center bore.
Offset and Backspacing: Factory Wheel vs Options
Backspacing ≈ width/2 + ET/25.4 + 0.5 in. "Inward" means closer to the suspension; "outward" means closer to the fender lip.
| Setup | Size | ET | Backspacing | Inward vs OE | Outward vs OE |
|---|---|---|---|---|---|
| Factory (OE) | 17x7J | ET19 | 4.75 in (121 mm) | — | — |
| Flush | 20x9J | ET20 | 5.79 in (147 mm) | +26 mm | +24 mm |
| Maximum | 20x10J | ET15 | 6.09 in (155 mm) | +34 mm | +42 mm |
Hub-Centric Rings for a 77.8 mm Center Bore
A wheel with a center bore larger than 77.8 mm needs a hub-centric ring. The most common combinations:
| Wheel bore | Ring size |
|---|---|
| 78.1 mm | 78.1 → 77.8 mm |
| 84.1 mm | 84.1 → 77.8 mm |
| 93.1 mm | 93.1 → 77.8 mm |
| 100.1 mm | 100.1 → 77.8 mm |
ANKUSI forged wheels are bored to exactly 77.8 mm for this vehicle, so no ring is needed.
Sources and Last Update
Bolt pattern and center bore were checked against at least two independent fitment references before publication.
This record is part of the open ANKUSI Wheel Fitment Dataset (DOI 10.5281/zenodo.23241521, CC BY 4.0).
Compiled by the ANKUSI Wheels engineering team, an IATF 16949 and ISO 9001 certified forged wheel factory in Guangzhou.
FAQ
What is the bolt pattern on a Dodge Ram?
The Dodge Ram uses a 5x139.7 bolt pattern with a 77.8mm center bore across every Ram variant in our database (5 guides, 2001–2004).
What is the Dodge Ram center bore?
The hub-centric center bore is 77.8 mm. Aftermarket wheels should match this bore or use hub-centric rings so the hub, not the bolts, carries the load.
Do all Dodge Ram years share the same wheel fitment?
The bolt pattern and center bore are the same across the years we cover, but OE wheel width and offset differ by trim, so check the exact model line before choosing an aftermarket size.
Which forged wheels fit the Dodge Ram?
Any wheel drilled 5x139.7 with a 77.8mm hub bore in the offset range shown on the model guide. ANKUSI forges wheels to order for this exact specification, in 14–24 inch diameters, so no adapters or hub rings are needed.