What is perfect weight distribution?
Don't believe all the hype BMW Marketing tells you. "
Almost Perfect Weight Distribution" and "Ultimate Driving Machine" are just BMW advertising slogans. Not universal truths or laws of physics. Weight distribution changes dramatically under braking and acceleration too. Weight distribution should not be confused with handling. I have to commend BMW marketing for convincing so many people that 50:50 (or rather
near 50:50 as they actually say) is the "perfect" weight distribution. Always! But what exactly is it perfect for? Balancing on the edge of a cliff?

. Maybe if I fill the tank of the S4 and put some luggage in the boot I will notice some miraculous change and be able to answer that question myself. No wait, maybe I should throw some lead in the front of my Porsche to get nearer to the magical 50:50 (or is it 52:48?, you can tell I am enjoying this

)
Aren't 7 series owners supposed to ride in the back anyway? Marketing a 2 ton limo/taxi as a driver's car ain't clever, imo. It doesn't surprise me that Merc's S-class owns this segment.
CM stuff:
Yes, UDM is pure marketing term. As said many times in most markets around the world BMW brand is traditionally based (and advertised & promoted) on pleasure & joy associated with driving BMW cars (Sheer Driving Pleasure, Freude am Fahren etc)
Why UDM in US market? Because
at that time marketers said it wouldn't be wise to promote joy in that particular (mostly conservative & traditionalistic) segment, and there were no really sporty sedans available - so the take an advantage of that.
But be honest - BMW hardly ever was an ultimated driving machine - since Porsche, Ferrari, Jaguars, Astons etc were much more that than BMW (at least at that time).
But yes - BMW sedans were extremely agile & nimble compared to the other sedans- and therefore the slogan. Which caters well to the customers who wanted - beside a sports car like Ferrari or Porsche - also a sporty sedan luxury sedan in their garage.
And since the slogan worked they haven't changed it.
In other markets - as said - BMW is rather associated of (driving) joy & pleasure. Which is a bit more broad term than just being an ultimate machine for driving. Since driving pleasure can also mean different things to different drivers. But all based on performance, agility & dynamism - of course.
My personal opinion:
50:50 weight distribution.
I'm not an engineer, but as far as I know balanced things brings more natural behavior - at least in physics (eg. mechanics).
Yet today when electronics is so much developed I don't think there is much difference between 50:50, or 53:47 weight distribution - since the electronic systems can compensate a lot. Perhaps 50:50 leads to less electronic intervenes, but that doesn't mean 53:47 is much worse. If any at all.
So - as proved with an article above - today the mechanics is just of a secondary nature. It's just a hardware - it's a platform - but electronics & software are the things that make that hardware being OK, good, very good or excellent.
Germans were overridden by Japanese when electronic revolution kicked in. Since Germans were excellent machine / hardware producers - having excellent mechanic engineers. And in the electronic world they were beaten by Japanese in particular (electronic engineering) , and by Americans as well (software, programming, elec. engineering ... yet Americans didn't translated that advantage well in their car industry, unfortunately).
But today the Germans are almost on par ... have invested heavily in electronics & software development. So ... today bot parts are extremely important: electronics & mechanical hardware. Only the best 6 optimal combination leads to a near perfect product (engineering wise).
As Martin said: yes, we are in the new era ... when with a touch of a button you can change a behavior of your car completely. And if hardware allows that - your car can transform from ultra soft&comfortable to ultra hard&sporty vehicle.
The differences will be very thin - mostly artificially produced by marketing people ... for the sake of brand position & perception ... While the product will be very much alike ... And with hacking CUs in the car I'm sure it will be very easy to transfer your MB into a BMW, or vice versa.
Good, or sad?
IMO good ... but definitely less pure & romantic.

But we already know that: we are living in an superficially world today ... And the future seems to be even more superficial. Much more about marketing & perception that the real-world stuff.
