Thats a tyre size not a wheel size. but no there should be no probs, i have 205/50/16's on the front which come to the same size. lowered and no probs..
have ONCE heard a tyre clip something, but that was steering hard over a hard bump so... i think you will be fine.
i have 225's on the back, make sure you get wider tyres for the rear!
mine had spacer plates which someone took out along the way... so you may find that it came with them already???? anyone??