Just found this thread:
http://e84.xbimmers.com/forums/showthread.php?t=736837
Looks like the same exact wheels ride smooth according to this user.
Also, I think the BMW OEM 19" wheels are forged. Pretty sure they are going to be more durable to the aftermarket 18" I was looking to buy. Can anyone confirm this part? These were the 18" aftermarket rims I was looking to buy:
http://www.rwcwheels.com/en/site/col...ction/bmw/bm70
Oh and bucketfoot, I also have the 17" OEM, but I'm going to use them for winter.