In the driver's door jamb, my 2011 X5d with sport package and 20s, and without 3rd seat, indicates a recommended 32/35; 38/41 for over 100 mph.

BMW prides itself with design and manufacturing of vehicles with 50/50 weight distribution, then they undo that balance by recommending lower front tire pressures, and putting 'staggered' wheel/tire set-ups on sport package and M cars; the former for inducing 'safe' understeer, and the latter for vanity. In the past, on LCA E36 and E46 M3s, myself and others would run a rear wheel/tire on front for a 'square' set-up at the track for more front grip, and therefore more balanced handling and more even tire wear. With my driving style on the twisty roads that I frequent, with the X5 I find more front tire pressure goes a little way towards the same thing.

I am not suggesting that people should experiment with factory-recommended tire pressures; in my original post I was merely pointing out that tire pressures were not a variable when comparing ride quality and handling between the Dunlops and Toyos.