I put 265/75r16's (~31" circumference) on my (at the time) stock 88 4runner with aftermarket 16x8 (3.75" backspacing) wheels and they missed rubbing the rear of the front fenderwell by about 1/4" at full-lock turning. I can't imagine a tire with 2" larger diameter not rubbing at some point considering the tire is 1" closer to anything around it.

 

SR5 15x7 inch wheels with 4.75 in backspace, hammer the pinch weld and they work fine.

Robb

 

I guess different "stock" trucks are different?
31" almost rubbed on mine (with 15" stock chromed steelies)- we tested... and 33" would've.
that's why I went with the 265/75r16's on mine- slightly smaller than the corresponding 15's and the backspacing on the new wheel (3.75") pushed the tire back out to almost rubbing. No way I was getting a 33 without rubbing, regardless of backspacing.

 

265 measure to 32" don't they?

 

265's are 31.6", 33x9.50's are easier to fit