For them you bring in people like Japanese tuning firm Wald so that they can make the car have more street cred. This basically means lots more of the motorsport look by adding diffusers and spoilers as well as those big steam roller sized wheels which have rubber band tires with extremely stiff ride wrecking sidewalls to the car coupled with an extremely lowered ride height, either from stiffer springs or an adjustment towards the air suspension (neither of which benefits ride comfort too).
But boy does the W211 S-Class look good. A front bumper/spoiler setup that looks like it came from a Brabus CLS with daytime running LEDs and side slits, different front fenders with slits behind the front wheels, fat side skirts and that rear bumper/diffuser with slits at each side complete with...wait...the usual quad tail exhaust set up that seems to be the norm with all of these performance tuners. The only difference is the quad pipes are oval and look like they’re Siamese twins/co-joined together instead of individual pipes.
There are also two different types of rims to choose from. Both seem to be as black as the other and both look good on the white demonstrator model shown by Wald in the press photos. Oh yes, both, especially the slim 5 spoke wheels make the stock brakes (which look huge under the Mercedes 18inches) look like little Kei-car sized stoppers.
Yes folks. What Wald have done is really nothing new. Except that they’re calling this Wald S-Class the ‘Black Bison’. Why? I have no apparent idea as it isn't even black.