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i ran a stock chevy rally back in the day, 15x7 with i think 4.5-4" bsp, whatever stock is
the 7" wide rim was perfect and made the tire look fat
 

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Discussion Starter · #3 ·
strtlegal said:
i ran a stock chevy rally back in the day, 15x7 with i think 4.5-4" bsp, whatever stock is
the 7" wide rim was perfect and made the tire look fat
Thanks. I just mounted one of them on a 15x7 ralley with 4 and 1/4" backspace. It looks like it will clear. Tire fills the wheel well nice. I will order the Cragars for it tomorrow, now that I know they will work.
 

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I use a 275/60/15 on an 8 inch rim, and it fits fine without any clearance issues. Also use a 28 x 10.5 slick for the track, but that required a "little" beating as well as rolling the outer lip. The 255/70 should be about 8.7 wide tread by 29" high, so it should fit the opening very well.

Derek
 

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Discussion Starter · #5 ·
Thanks for the responses. Well Crap, I bought the 15x7 with 4 and 1/4" backspace. Had the tires mounted and balanced. Put them on the car. They look good, but there is a very slight rub on the inner fender when I launch it. I measured and measured before I went this route. Mabey I need some more schoolin.
 

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I think the 4.5 back spacing on a 15 x 7 would be perfect. You can never tell though as the axle isn't always centered in the wheelhouse.
 

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I run 255/60/15 on 15x7's with 4.5 backspacing on the rear of my 71 Nova. They fit perfectly, but the passenger side slightly rubs going over a steep bump. This is only because my rear is a little off center.
 
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