I drove a fellow board member's 500E once, and similarly the car barely stopped (though the travel was considerable if you pushed Very hard). I mean, pushing nearly all the way to the floor I couldn't even induce ABS. However, after a number of 100 MPH "panic stops", their bite improved dramatically. Glazing perhaps? (I know this sounds bizaar, but I was shocked too)

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"If God had meant for us to walk, why did he give us feet that fit car pedals?" Sir Sterling Moss

Michael
2014 E63S Estate
2006 SLK55
1995 E500
1986 Porsche 944 turbo