I've had my 2007 speed3 for about 2 years now, and after about 25,000 miles, I started to get a really high pitched loud, pulsating, noise at low speeds during turns when my engine was hot. After several attempts to get it fixed, the dealer finally said they solved it by putting an additive into my transmission fluid. It went away for a bit, but now it's coming back when my engine is hot in 1st and 2nd gear. It's extremely annoying. Has anyone else experienced this? Thanks.