Originally Posted by Neal5280
How can I tell what backspacing I have? The rims I have now came with it and I am not sure what they are...
If you can, remove a wheel from your Jeep. Turn it upside down so the inside of the wheel is pointing up. Lay a straight edge across the wheel, but not the tire. Measure from the back of the mounting surface to the straight edge and that will give you the backspacing. It's very important that the straight edge only go from the edge of the rim to the other edge of the rim and not on the tire.
Here's a pic I found online...
Hope that helps.