widest tire on 6 inch steelie?

CRAIG COX said
I have 255/60/15" on the back of my Duster with 6" ralley's.

Just because you can find someone that will squeeze a wide tire on a narrow rim, does not mean you should or that it fits correctly.

I can get the same size pants on that I wore in high school, but trust me…….. You wouldn't want to see it.