[70']

I recently installed a lift, and went to 20" wheels. I did have trouble getting the fronts to fit over the Center hub, at least all the way to a seated position. I also contemplated machining our the center hole of each wheel, but decided to machine down the axle/hub housing instead for a few reasons, rotation of tires becomes a pain if you only machine two wheels to fit the front, most likely machining will ultimately damage whatever finish is on the wheels (mine are powder coated black) and finally eventually you will probably want to change wheels again and then your in the same boat. Just fix it right on the front end and be done with it.