I will finally post pics of my car as I haven't done so yet. Waiting on the M5 spoiler, HP Thunder 8500k angel eyes/fogs, and the 15MM spacers. The spacers supposedly are going to arrive in 2 weeks, so it's going to take a while.

 

Where you buy the spacers from?

 

EBay. There is only 1 seller on eBay selling 15mm H&R Spacers for our cars.

Btw, yes it alters suspension geometry. So will increasing the diameter of your tire, changing the offset of the rim, changing the thickness of the tires, and using spacers. However, the front tires are affected more (because you turn with the front tires), so it's best to leave the front alone (or minimally change it), whereas the rear tire does not have this additional function. It's probably reasonably safe to use spacers 12-20mm thickness on the rears because it increases the tendency to oversteer created from a very minute loss in traction in the rears --> but because the cars are made with mild understeer, the affect should be kept to a minimum (in other words the front tires break traction before the rears do for safety reasons, or more accurately, to prevent BMW from being sued by people).

 

Was there ever any pictures posted of 172m and 15mm spacers?

 

10mm on rear of my 2008 550i sport, looks great!

 

i have TMS 15 mm spacers on my 172m wheels, they now have the exact same distance from edge of rim to lip of wheel well as the front rims. It looks very factory, what the car shoud've came with. if I could do it again, I would get the TMS 17.5 spacers for a little more of a wider stance.

 

Thank you, this was the reply i was looking for, a picture would be nice, but the advice great

Thank you.

 

Pics are attached. Both pics have the Turner Motorsport 15mm spacer, just taken at slightly different angles.

 

Thank you very much.

 

I am in the same situation with my 550i. I am looking to use spacers to bring out my rear wheels a bit. This info is very helpful.