Originally Posted by elclipo
So I found a set of 15x8 aluminum rims locally. Would it be a good idea to make the switch?
If the price it good and you would be happy with them ... I would. I am very happy with the 15x8 and 33" tire combo. You will get a little sidewall bulge, but nothing too bad. I'm putting on a pic of mine so you can see the bulge.
For reference these wheels have 3.75" backspacing, and you can see that they do stick out a ways which might cause problems with the law if you are sticking out from your fenders too far. But with a 12.5" wide tire you are going to need some backspacing to avoid rubbing at full lock, a lot of people will run spacers just for this and that adds on a whole new set of potential problems. On a JK I think that magic backspacing for that wide of a tire is at most 4.5". DB, has a point: Might wanna ask in the TJ forum to see what backspacing you'll need for that wide of a tire on a TJ. My guess is that those aluminum wheels you found have around a 4" backspacing if they are aftermarket. The higher the backspacing the closer they sit to the hubs and the less strain is put on the ball joints, but you also might run into some rubbing when you flex or turn.