I just bought a set of factory chrome rims off a board member i run a 255/50/16 no what ca I go to on the rear? thanks Tom

 

I think that's as big as you can go on that wheel anyway

 

Ok I say it another way forget the rims what is the biggest tire I can fit into a stock wheel well with out cutting the car (I love to cut em' but this is a daily driver)

 

depend how far out the body you want the wheel to go -
I find that 315's are about the biggest that also look good - some folks have gotten away with 335's but they stick out a bit much for my taste.

but you need an 11" rim