Overview
The Rough Country R/C1100 is a clear aluminum 1.5 inch wheel adapter that converts a 5 on 5 inch bolt pattern to a 5 on 4.5 inch pattern. It is framed for Jeep JK owners who want to run TJ, XJ and YJ wheels.
Rough Country presents the adapter as a way to keep using previous-model wheels instead of paying the higher cost of newer wheels. Because it also works as a 1.5 inch wheel spacer, it allows a wider tire on stock wheels and gives the vehicle a more aggressive look.
The adapter is made of 6061-T6 aluminum, which the brand describes as corrosion resistant and suited to exposure to the elements.
Key features
- Converts a 5 on 5 inch hub to a 5 on 4.5 inch pattern for TJ, XJ and YJ wheels.
- 1.5 inch spacer for a wider tire on stock wheels.
- Built from 6061-T6 aluminum, which resists corrosion well for exposure to the elements.
- Clear finish with a bolt-on installation.
Using older wheels on a JK
Running wheels from an earlier generation on a newer Jeep is a common way to keep usable wheels in service. The main question is whether the hub and the wheel share the same bolt pattern once the adapter is in place. Check the seat type, lug thread and wheel thickness so the lug nuts engage fully on the adapter.
Because the wheel sits farther from the hub, brake parts and suspension components may need a fresh look. Inspect the lug nuts after the first drive and again after a few weeks of regular use. Keep the adapter faces clean and dry to reduce corrosion where the metal meets the hub.
- Check lug seat type against the wheel
- Recheck lug torque after the first drive
- Inspect adapter faces for corrosion
Specifications
| Brand | Rough Country |
|---|---|
| Part number | R/C1100 |
| Type | Wheel adapter and spacer |
| Bolt pattern | 5 on 5 to 5 on 4.5 |
| Thickness | 1.5 inch |
| Material | Aluminum, 6061-T6 |
| Color | Clear |
Vehicle fitment
The adapter is framed for Jeep JK vehicles with a 5 on 5 inch bolt pattern, so wheels from earlier models with a 5 on 4.5 inch pattern can be mounted. Before ordering, confirm your year, model and trim suit a 5 on 5 hub.
Check that your hub is 5 on 5 inch and that the wheels you plan to use are 5 on 4.5 inch. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
The adapter mounts between the hub and the wheel. Because it moves the wheel outward by 1.5 inches, recheck steering and fender clearance after fitting, and check lug engagement again after the first drive.
What’s included
Confirm the adapter count and any bolts or studs against your installation before you begin.
