Wheel Offset

[SS68Dart]

 hey on my 68 dart i have a 8 3/4 rear end i am running 15x10 Weld Pro Stars. I have full quarters on my car and my diff is 59" from outside of drum to outside drum. The fender lip to fender lip is 67". I want to know if a 7.5" backspace on a 10" rim will work and give me enough clearance. does anyone have anymore info on this and let me know just so im not spending money on rims that wouldn't do the trick thanks..

[moparrr07]

from the tech pages

The A-body 8.75 came with small drum brakes, and a 4" bolt pattern that isn't very popular. As for width, once you move springs and wheelwells to fit 10" rims, you'll find you need 7.5" of backspacing. There are only 2 wheels available with this much offset, so choices are limited. Notice alot of a-bodies have Draglites of Centerlines? Now you know why.

this is with an a body width axle so a 59 inch axle will not fit-

[CudaDon65]

Look in the tech page (Chassie & Body) and then to How to measure for rear wheel size. Good info there. Hope this helps.

[SS68Dart]

Yeah, 7.5 is exactly what we came to a conclusion too. That page helped alot. But Weld doesnt make a Pro Star wheel with 7.5 except for chev and dodge. So i have to use a 15x8 with 5.5 back spacing which will work.  This leads me to my next question, will I find any problems mounting a 29x10 inch slick on an 8 inch rim?

[moparrr07]

the usual is .5 to 1 inch tire overlap per side

[Ed K]

No problem putting a 10 or 10 1/2slick on a 8 in, wheel. It wil make the overall section width about 1in. narrower or in other words side wall width.