At my height my 255's never rubbed at ET45. My tires do rub on deep dips with 265's ET45. Putting 10mm spacers on for a total ET35 in the rear with 265's I rubbed just leaving the driving. I bet 255 will rub hard as well as 245. 235 might work but your ET33 is pretty aggressive. Fenders will need to be rolled hardcore or cut, bumper clips shaved smooth, and maybe even fender pulls. Good luck!