I want to buy some aluminum rims like Draglites or maybe the Summit/Jegs knock-offs. I've got 275/60*15 MT ET's on stock rims right now and I've got less than 1/2" clearance to the frame rails. So I was planning on 15 x 8 rims with 4" BS. My question is what will happen with the tire's "bulge" when I go to the 1 inch wider 15 x 8's from the stock 15 x 7's with the same BS? I'm thinking with the wider rim there should be less bulge, and therefore more clearance? I also now see that there are not many 15 x 8's with 4" BS. But the way it is if I lose 1/2" they should hit for sure - unless the bulge thing helps? I also thought about aluminum drums? I've used spacers and don't really want to use them permanantly. Any suggestions would be appreciated.