Demon Rear Wheels
Look up how to measure your backspace and do that. On my 74 Duster, you don't really want to go wider than 245-60-15 on a 8 inch rim. You might be able to squeeze a 255 but you might have to do some slight modification.
So what are
your measurements? I would love to see your spring to quarter lip measurements, or wheel mount to spring and wheel mount to quarter measurement, or whatever you've got. Tire to quarter and tire to spring would work too. Every Duster/Demon/Dart Sport I've seen has ~12" from spring to quarter lip with the springs in the stock location and a stock quarter lip. And that's more than enough to run a 275/60/15 on a 15x8 with the right backspace, even on a lowered car, because a 275/60/15 has an 11" section width. So, properly centered, a 1/2" of clearance on either side. Which is tight, but enough not to rub.
I've seen you post this multiple times now, and disagree with my assessment that 275's will fit a stock, unmodified Demon/Duster/Dart Sport even though I've run 275's on my own car without modification. And there are at least a dozen other active members on this board with stock Dusters/Demons/Dart Sports running 275's with unmodified quarters and the stock spring locations.
I'm not saying your car can, because there are definitely body tolerance ranges on these cars and there are definitely cars that can run wider tires than others. But if your Duster can't go more than a 245/60/15 in the back with the proper backspacing, it would literally be the
only one I've heard that was like that.
