I love my PS2's here in SoCal and I don't have ADS. I really think it's more a function of the sidewall. When I put a new set of 205/65-15 on my 1989 560SL what a dream ride. I mean really! Compare a 35 to a 65 series sidewall........... My honda Pilot wth SUV sidewalls rides smoother than my SL500.
Now I must say I haven't tried these tires but I have heard good thing's about them from 'SL BRABUS' and others at
Pirelli PZero Nero M&S