I purchased this set of wheel spacers from Burger Motorsports. I have a pair of 12MM and a pair of 15MM. I have decided not to have them installed, and it's too late to return them.
The box is unopened. I have not taken them out of the box for viewing. If you need pictures of these, let me know, and I'll open the box and take pictures. I purchased these in August, and can provide you with proof of purchase. I paid a total of $214.00 (that includes shipping). I'm looking to get $160 for both pairs, plus shipping.
Their specs can be viewed on their website:
http://www.burgertuning.com/BMW_wheel_spacers.html
Thanks!