The 2016 Ram 2500 uses eight-lug wheels with a standard M14x1.5 lug nut thread and a 60-degree conical (taper) seat. The typical lug nut hex size you’ll encounter is around 21 mm to 22 mm, and the recommended torque for OEM wheels is roughly 140–150 ft-lbs. Always verify with your specific wheel type and the owner’s manual, since aftermarket rims can alter these specs.
Wheel pattern and lug thread specifications
Below are the core specifications that determine which lug nuts you should use on a 2016 Ram 2500. This helps ensure proper fitment and safe installation.
- Bolt pattern: 8 on 165.1 mm (8x6.5 inches)
- Lug nut thread size: M14x1.5
- Seat type: 60-degree conical (acorn) seat
- Common lug nut hex size: 21 mm (13/16 inch) to 22 mm (7/8 inch), depending on wheel supplier
- Nominal torque: 140–150 ft-lbs (190–205 Nm)
These specifications reflect typical OEM configurations for the 2016 Ram 2500. If your wheels are aftermarket or sourced from a different supplier, the seat, thread, or hex size may vary, so always confirm before purchase.
Choosing replacement lug nuts and installation tips
When replacing lug nuts, ensure you select parts that exactly match the wheel and stud geometry. The following guidance helps prevent improper seating or loosening during operation.
- Match the thread size and pitch (M14x1.5) to the wheel stud
- Ensure the seat type matches your wheel (60-degree conical is common for Ram aftermarket wheels)
- Use the correct hex size for your socket/wrench (typically 21–22 mm)
- Follow the torque specification (about 140–150 ft-lbs) and retorque after an initial 50–100 miles
Verification is key: always consult the wheel manufacturer’s documentation or your dealership service manual to confirm exact lug nut specs for your particular wheels and VIN.
Summary
The 2016 Ram 2500 typically uses eight lug nuts with M14x1.5 threads and a 60-degree conical seat, with a common hex size around 21–22 mm and a torque specification of 140–150 ft-lbs. Variations can occur with aftermarket wheels, so always verify the exact specs for your setup in the owner’s manual or with the wheel manufacturer.
Can I use 7/8 instead of 22mm?
A: 22mm = 0.866", which essentialy is a 7/8" socket. A 7/8" socket will work on a 22mm lug nut, but it can feel a little loose. The other way around, a 22mm can work on a 7/8" lug nut, but it can be really snug, which is not bad.
What size are the lug nuts on a 2016 Ram 2500?
Dorman – Wheel Lug Nut: M14-1.50 Thread, Conical 60, Standard, 26 mm L, Clear Chrome/Zinc-Plated (sold by each) (Part No. 611-979)
What year did Ram switch to 6 lugs?
2019-Present Models (Fifth Generation)
Beginning with the fifth generation introduced in 2019, RAM made a significant change to the bolt pattern of the 1500 models. Current RAM 1500 trucks feature a 6×139.7mm pattern, which includes: 6 lug nuts (increased from 5 in previous generations)
Is a 21mm socket the same as 13/16?
Technically the 13/16 is the smaller and more correct size. Theoretically, both. You can use a 21mm socket on a 13/16 nut. But not vice versa.