I know 15x8s with 5.5" backspacing works great for welds but I might be able to get some 15x8.5 wheels with 4.78" backspacing? I'm going to be fitting them on a tc rear for my 87 cougar. For tires I'll probably be using 275/50s. Does anyone have this combo or something similar? I want to lower the car and need to know if there will be any clearance issues. Up front I'll be using the standard skinnies.
I had 255/60-15s on 15x8s with 4.5" bs, and they rubbed on anything but flat roads.
I run 15x7's with 245/50/15's with 4 1/8" bs for autox and havent had any problems, but its been close in the front and so I ordered new springs, but it may not help you at all
Thanks for the advice guys. Looks like I would have to go with a mustang width axle to fit those kind of wheels. And if I was to do that I might just go one step further with a 5 lug conversion and cragar ss's :hick: Old school!
I have 275/60/15 on 15x7s in the rear on mine and it only rubs going up to steep of a slant. later this month i can tell you if there is any problems with rubbing with 295/50/15 the i am getting on some 15x10s welds.
blackcougar71, what's the backspacing on your 15x7s? My friend is running 275/60/r15s on 15x8s with 5.5" backspacing. It does look close. I would think you have enough clearance to really drop it with the same backspacing. And yes, when you get the 15x10's with 295s I've got to see that! That's gotta look badass.