It is also about looks, I think :-)

I have looked at BMW, and they are selling:

model 110, 111, 112, and 143. They must have a special coating??
The 3 first are 17" and the 143 are 18".
110 and 111 are with continental tires, and 112 and 143 are with dunlop.
Link to pictures of the rims:
Felgen-Katalog - BMW-Treff - der Treffpunkt fr alle BMW-Fans und -Fahrer


The 18" rims looks easy to clean in the winter, but do you realy think the 17" is a better choice?

Hi
Thomas