I hit 1 month yesterday so far the only real issue is the occasional RPM revs but its not a big deal, i'll wait for the fix. I will try turning ac on and off see if it matters.
I drove my X3 home in a torrential downpour rain yesterday had about a 25 mile highway drive and the X3 held its own no problems at the speed limit. Really well mannered in heavy rain.
I do have some minor wind noise at high speeds, but its barely noticeable and not of concern to me - i think its just the mirrors.
definitely no leak w/ all the rain we've had.
one last thing, forget washing the car myself or going to the dealer or car wash, i'm just going to Dukat's house to use his supply of cleaning and sealants, etc