285/75/16s fit fine, give the bars one or two cranks and realign, that isn't enough to hurt anything.
People won't beleive me, but I know a guy w/ 315/75/16 (35" tires) on a stock z71 w/ just Tbars and a little minor trimming
i got an 03 1500 w/ the 285 75 r 16. no problems at all.
any thoughts on running the 34 10.50 ltb? aggressive tire, but will they fit? sorry bout the hi-jack.