who's Running 18 "s ?

Those that are running 18's, do any of you have the RMS AlterK? I'd like to run 18's but everything I've read says to avoid it with the AlterK. I know 17's will fit no problem, but I'd like a bit more wheel, plus the FR500's I want are more difficult to find in 17's.

The FR500's are a mustang wheel and being a mustang fan also they are not hard to find at all. Check out 50resto.com and americanmuscle.com they both carry fr500's in 17x9, 17x10, 17x10.5 as well as 18's.

http://lib.store.yahoo.net/lib/mustangt ... 06-11.html

The only problem you may have is a mustang has a lot more room for backspacing than a dart and usually have more offset. Make shire you measure before purchase.

I agree. I think you have it backwards. You run into back space problems when going under a 17" rim with the alter-k. 18" should be fine. In fact I think bill is going with 18" rims on his own dart.

This is correct, when I was going though the planning of what rims to buy. I tried the rims off my mustang first. They are 17' with a big back space over 6" and would hit the arms easy. The 18's I have now clear with plenty of room, but if I was to drop down to 17's with the same wheel I not to sure if the 5" backspace would be to much to clear the arms.

Currently I have 18x8 centerline rims with 5" backspace and 0 Offset. The only thing I would have changed is maybe a front rim with a little positive offset to move it into the fender. Unfortunately wheel makers don’t make the same wheels to fit every combination out there so you just need to find the best fit in the style you are looking for. I had to set up to hemi torsion bars to prevent the wheel from rubbing the fender in tight turns. But I also don’t have a front swar bar yet, this would help the car from leaning into the wheel on turns.