I was looking for wheel weights and found the following information toward sthe bottom of the page here for the 19 inch BMW Competition wheels:
http://www.m3post.com/forums/showthread.php?t=265756
Front: 19x9 +31, 26lbs
Rear: 19x10 +25 26.8lbs
That's pretty heavy! I was hoping they'd come in closer to 20lbs.