The Warn flares stick out aboout 2-3". I run 33x12.50's on 15x10 rims w/a 3.75 BS, and the flares just cover the outer edge of the tread. I will take a measurement of them and let you know for sure.

More than tread lightly. Leave it like you were never there, nor anyone else.
'90 X-cab 4.88's 33 BFG AT's, rr ARB, Headers, Ignition upgrade, cold air induction.
'91 X-cab 5.29's 315's BFG MT's, rr ARB, custom bumper and flatbed