can you guys share where you got the spacers from, is there any steering shake at certain speed,? also do you have to use extended lug nuts ?
Bought mine on eBay directly from the manufacturer (BONOSS, formerly Bloxsport).
Note, the version I bought is constructed out of the much stronger aluminum (7075-T6) grade, instead of the more typical and less expensive 6061-T6 grade. Probably not necessary for the type of driving most of us will do with our vehicles, but I wanted the best/strongest material readily available for these spacers.
As others have said, these 15mm and 20mm spacers are 100% plug and play if you have 18” or 19” wheels on your vehicle. If you have a M3P+ (with the 20” wheels), then the 15mm spacer won’t fit without some modification, but the 20mm spacers will fit just fine.
Assuming the spacers have been installed correctly and your alignment is within spec, then absolutely zero vibration or steering shake at any speed. 120 mph is about the highest speed I’ve taken my vehicle with the spacers installed (I was too chicken to take it up the max capable 162 mph speed out of fear of getting pulled/ticketed). Of course, steering is perfectly straight, smooth and vibration-free at 120 mph. Not sure I would use/keep spacers if I were one of those guys who likes to track their vehicle. However, for general street use, I think the general consensus is spacers are perfectly safe.. when installed correctly.
Good luck!!!