70 Impala Tire Size

What's the biggest slick I can stuff in the rear without any modifications?


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Unless someone has a car like that, there is no way anyone can answer a question like that. It would sure help if we knew how much room there was, how much travel in the rearend up and down, how wide is the opening.
Then it would be helpful to know if you had enough power to get on it, with big slicks, without blowing some thing up.

Bob

i'm betting 11.5 x 29 or even larger, but why not just measure first? Also, in my opinion, you need 1" minimum clearance between the tire sidewall and frame and tire sidewall and fender lip----when you turn the suspension will probably move a little. Having the 1" clearance can help prevent rubbing. Although you will still probably get a little bit of it.