Alright I got 15x8 rally's with 215/65/r15 on all fours and the fronts scrape my fenders pretty bad when I turn since I replaced the front coils.

What size tire would I need or should I just go with a 15x7?

If I do go with a 15x7 what size tire would I need so I don't scrape em?

Also what the heck is backspacing.

I've got 15x7's Ralleys, 4 1/2 backspacing, with 235/60/15's on the front. New BB coils springs and shocks, no hint of rubbing. This has been discussed before at length, and I believe the consensus was the 235 would be the widest that would fit on the front without rubbing. If you have any doubts, the 225's will fit for sure......KZ

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John D. Smith
69' SS/396
www.geocities.com/kz1000ltd (http://www.geocities.com/kz1000ltd)

The 15X8's have a 4" backspace, that is why the outside of the tires rub on turn in. A 15X7 with 4.5" B.S. is what you need.

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http://geocities.com/mike67rs/1.html

So is backspacing how tall the tire is?

Backspacing is measured from the inside wheel hub (where your wheel bolt on) to the backside wheel lip. A 4.5" backspace will be set further into the wheelwell than a 4" backspace. A 15X8" wheel with 4" BS will actually stick out 1" further than a 15X7 with 4.5" BS. (1/2" for wheel width and 1/2" for BS)