2025 Ram CP102B Bolt Pattern
Checking fitment for your vehicle? Below you will find the factory bolt pattern (also known as the lug pattern) for the 2025 Ram CP102B, along with offset and center bore data.
2025 Ram CP102B Wheel Fitment Specs
| Bolt Pattern (Lug Pattern) | 6x139.7 (6x5.5") |
|---|---|
| Lug Nut / Bolt Size | 14x1.5 |
| Center Bore (CB) | 77.8 mm |
| Offset (ET) | 18-25 |
| Torque Specs | 130 ft-lbs (176 Nm) |
Imperial Match: 6x139.7 is commonly referred to as 6x5.5" in US Standard.
2025 CP102B — Year-Specific Fitment Context
The 2025 is the only model year of the Ram CP102B in our database using the 6x139.7 bolt pattern. Note: the 2024 model used a different pattern (5x139.7), so its wheels are NOT interchangeable with the 2025. Across its full production run (2024–2025), the CP102B has also used: 5x139.7.
Ram CP102B Bolt Pattern by Year
The table below shows how the CP102B's wheel specifications have changed over the years. The 2025 model year is highlighted.
| Year | Bolt Pattern | Center Bore | Offset |
|---|---|---|---|
| 2024 | 5x139.7 | 77.8 | 18-25 |
| ▸ 2025 | 6x139.7 | 77.8 | 18-25 |
6x139.7 Pattern Context
This bolt pattern appears on 1071 vehicles in our current database and is considered common.
Examples of other vehicles using 6x139.7:
Quick Tips & Safety Warnings
- ⚠️ This fitment uses a wide offset range. Check brake clearance and fender clearance before buying wheels.
- ⚠️ Torque lugs in a star pattern to 130 ft-lbs (176 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.
2025 Ram CP102B — Frequently Asked Questions
What is the bolt pattern for a 2025 Ram CP102B?
The 2025 Ram CP102B uses a 6x139.7 bolt pattern (also called lug pattern or PCD). The center bore is 77.8mm and the offset is 18-25mm.
Can I use 2024 Ram CP102B wheels on a 2025?
No. The 2024 CP102B used a 5x139.7 bolt pattern, which differs from the 2025's 6x139.7. They are not interchangeable.
What is the center bore of a 2025 Ram CP102B?
The factory center bore (hub bore) for the 2025 Ram CP102B is 77.8mm. If your aftermarket wheels have a larger hub bore, you will need hub-centric rings to prevent vibration.
Can I put aftermarket wheels on my 2025 Ram CP102B?
Absolutely. Just ensure the aftermarket wheels have a 6x139.7 bolt pattern, an offset near 18-25mm, and a center bore of at least 77.8mm (using hub rings if larger).
What lug nut size does the 2025 Ram CP102B use?
The 2025 Ram CP102B 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 77.8mm center bore important for the 2025 CP102B?
The 77.8mm 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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