73 Challenger wheels

[High Plains Mopars]

Well, I still have 15" but maybe this will help.

Rememebr that the leaf springs on a Challenger are splayed, that is they are wider at the rear than the front so this limits how much spacing can be put under there.

I'm using 15x8 wheels off a Ford Ranger under my Challenger. These have a 5" rear spacing on them. With a 295/50 rear tire, this was too much and caused interference with the rear segment of the leaf spring. A 1/4" spacer brought it all out enough to clear the spring while still providing 2" of clearence to the wheel lip. So I have 4 3/4" rear space on the rear. With 4 1/2 spacing you could probably go 17x9.5 and still fit it all in the stock wheel well. With 5" of rear space you can make it work, but may need to either use offset shackles to pull the springs in or a spacer to provide clearence.

Up front I ran into control arm interferece. Of course this was due to teh 15" size of the wheels and not the rear spacing. A 17" wheel would have cleared the control sufficiently. In my case, again needed a 1/4" spacer to get the room necessary to clear the control arm. A 17x8 with 4.5 to 5" of rear space would fit up front.