I have the stock montreal 2's on my 2002 GTI and just installed and eibach prosystem plus. The handling difference is dramatic though a bit harsher. I'm looking to upgrade my stock 16's with Potenza SO-3's but wonder if going to 17's with a 225-45-17 tire would make the car more responsive. Can anyone help me out? Is the Plus sizing worth the extra grand or so? Or will the upgraded rubber make a noticable difference. I only drive on the street BTW. Thanks all!