BMW does it very hard to find non OEM parts for their cars :think:

All the extras cost a lot and it?s very difficult to replace them with other parts.

A good example is the wheels. Both the ET?s and the tires sizes are really hard
to buy from others but ?BMW proved partners?.

I had to buy my 20? OEM wheels from BMW, because the ET?s wouldn?t be right
from any other wheel maker.
I did Google and Yahoo etc.

Also the 312 wheel size (8.5 front and 9.0 rear) makes it very hard to find good
non-RF tires in the size of 245/35 front and 275/30 rear.
Therefore I had to to buy 285/30 rears, which is the absolute maximum width for 9? wheels.

Why aren?t the 312 OEM rears 9.5? as they where on the E60 166/172M wheels?

They are not dumb at the BMW headquarters, but how dumb are we - the consumers?

Are you sure you`ll get style 312 8.5 in front?
http://felgenkatalog.auto-treff.com/
sez it`s only 9.0 for all 20" rims :confused:

No, they are 8,5" front and 9 " rear.

See this link.

Kreuzspeiche 312 (Silver and Ferricgrey)
Leichtmetallrad, gegossen, 20 Zoll. 8,5J x 20 vorne, 9J x 20 hinten. Einzelrad, ohne Reifen.

Yeah, you right.Strange that such different info.

The auto-treff.com is only a hobby site.

They have not yet got the right info in.