widest tire on 16" wheels?

[mcG]

what's the widest tire i can get for my 16" chrome wheels that were an option on my truck? according to the door label stock tire size was 255/70/16. can i go any wider or should i stick w/ this size? i'm looking at gettin some bridgestone revos soon...

 

[Makahveli]

11.50's, if you gotta lift 285/75r16 is the way to go then again they are 33's