I was at the dealership yesterday and asked my SA about it. She stated that they have seen the issue with the 528i and seemed to admit there is a problem with that model. However she said there isn't an issue with the 535 and that's how they perform. I had a 528 loaner yesterday and it did the same thing my 535 does. The 528 did seem much worse but that could be due to less HP.
2011 535xi, Dark Graphite Metallic, Oyster/Black Dakota Leather, Dark Wood, Premium Package, Cold Weather Package, iPod-USB, Sat Radio