a 10 mm spacer in the front would be too much. 10 mm spacer in the rear would be ok. I have had cars with a few mm clear to the strut and you can see where the tire rubs the dust off the strut under hard cornering. If I may try no spacers in the front and the 5 mm in the rear. before buyin I called Turner, and TC Kline for options. I thin the LTW wheels were on back order.
I doubt the 17's will fit the e92 M3.