Yes, 295/30 is only 26" and shorter than a 265/35. On my coupe the limit is 27" and the closest point is the front lip of the fenderwell when the wheel drops as far as possible (the rear geometry is such that as the rear drops it moves forward).
I had stock Conti DWSs on Crossfire wheels on the back of the SLK for a while but could tell if a run over cigarette butt was plain or filter - returned to a 245x50x16 in back (25.7") & 225x55x16 front and much nicer ride. Is a cruiser anyway.
Slk320 with Crossfire wheels/tires.