79avantiII Posted February 22, 2007 Report Share Posted February 22, 2007 Hello, this is my first posting as I recently fixed up my dads 79 avanti II and was wondering possible rim combinations. I measured my stock steel rims and they are 15x6 with a 4" backspace. I am interested in the Magnum 500's on the internet but they are 15x7 with a 4"25 back spacing. Will this combination work or will I get any rubbing on a full lock turn. Any help would be appreciated as I am having trouble finding any tech information on this car. Thank you Link to comment Share on other sites More sharing options...
profaqualung Posted February 22, 2007 Report Share Posted February 22, 2007 (edited) I have a 70 Avanti II, and am running the Magnum 500 15X7 rims with no problems - 215R65's on front, 225R65's on the rear - plus I have one coil cut out of the front spring to drop the nose a bit - no clearance problems at all. The only problem I ran into, was finding someone who actually had the rims in stock - and that included the manufacturer - I ended up getting mine from TONY BRANDA - the Mustang/Cobra people. Good Luck Edited February 22, 2007 by profaqualung Link to comment Share on other sites More sharing options...
SBCA96 Posted February 26, 2007 Report Share Posted February 26, 2007 You should be able to run up to a 4.5 inch backspacing without clearance issues. I am running 17 x 8 with a 5.02 back spacing, but my Cobra brake setup uses the rotor as a spacer giving me 4.75 backspacing. Its still not enough, and I get rim contact on the upper front threaded bushing. I am looking into an adjustable steering stop to solve that, I could also use a 1/4 spacer, the studs I used in my modified hubs are long enough. Tom Link to comment Share on other sites More sharing options...
79avantiII Posted February 26, 2007 Author Report Share Posted February 26, 2007 You should be able to run up to a 4.5 inch backspacing without clearanceissues. I am running 17 x 8 with a 5.02 back spacing, but my Cobra brake setup uses the rotor as a spacer giving me 4.75 backspacing. Its still not enough, and I get rim contact on the upper front threaded bushing. I am looking into an adjustable steering stop to solve that, I could also use a 1/4 spacer, the studs I used in my modified hubs are long enough. Tom Thank you both for your infomation. Its seems that the 4.25 backspace works fine as I have no clearance issues. 17 inch rims would have been much nicer!!!! Link to comment Share on other sites More sharing options...
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