Cool. From this thread
, wheel weights are
18" 23.2/24.9, say 23/25
19" 23.6/26.1, say 24/26
So, all up weights with PS2 are:
Yep. Pretty close. So, let's say for all practical purposes there is no weight savings whether you get BMW 18s or 19s. After-market wheels/tires would have to beat this to realize a weight savings. Pretty hard to do without spending big bucks (i.e. high quality forged wheels).