[aerohead]

Originally Posted by Vman455

Looks like Mercedes opened its own aeroacoustic tunnel last year; buried in the press release is a reference to a climate tunnel opening two years before that.

https://www.daimler.com/dccom/0-5-71...0-0-0-0-0.html

Thanks Vman455,this helps a lot.And would explain the photos of ice-covered M-Bs that are out there.
It would be nice if Daimler had published an SAE paper discussing the merits of the spinning wheels.
Ferdinand Porsche would drive 90-mph between Stuttgart and Berlin on the Autobahn in the 60K10,with fully covered wheels.Brake cooling didn't seem to be an issue.
With the climatic tunnel,they could simulate brake loads and evaluate brake cooling performance.
I've driven the Autobahn only once,but on the unlimited speed sections you'll see the large Benz, BMWs,and Porsches blow by at top speed.You wouldn't want brake fade out there in a panic stop situation.The ceramic rotors must be great!