I actually like the 15" wheels that came on my car and the tires are almost new db's but I would like to fill the wheelwells up a little more. Thought about some 20-25mm spacers from BMP. Any downside to this? I'm thinling rears only. If pic shows up, the car has been lowered a good 1"-1.5" since then.

http://www.fototime.com/D9426D0CF2E018C/standard.jpg