[///M1]

Originally Posted by The1

BMW doesn't use run flat on their M cars, so it is likely they are running a lighter wheel then our 135 or similar cars. so it won't matter if they are using the 18 or 19 on the car, because either way, it's likely going to be lighter then what we are currently "blessed" with

Originally Posted by RPM90

Yes, I know they don't.
But, again, all things being equal, like wheel material and tires, an 18" setup will always be lighter than a 19" setup.

So unless there is some real performance reason for 19's, it's cosmetic.

Actually not true, BMW puts RFTs on ///M cars - look no further than the X5 ///M and X6 ///M. Maybe to many of us they are not 'real' ///M cars, but in actuality they are. BMW broke many ///M 'traditions' with those pigs, just to name a few:

1. ///M offering with RFTs
2. ///M offering with auto tranny (SMG is technically not, so this is a first)
3. ///M offering with no perforated brake rotors
4. ///M offering with weight exceeding 4100lbs
5. ///M offering with AWD

I can prolly add more things here, but it only will sadden me further...