I know we've talked about this before, but the other day (well on my bimmer) after cleaning the car I let it sit in the garage while I drove my TL A few days later my wife tried to pull it out of the garage and the drivers rear calliper was like frozen. It was really weird and I had to gun the engine to pop it loose from the rotor.

it's worked fine for 2 weeks now, and besides the fact that it's a bimmer I'm blaming it on insufficient rinsing of the wheel cleaner.

any thoughts from anyone??