As bigX5er said, it depends on the tire. More expensive and better brands seem to fair better. Ask a tire shop or call the service department of your BMW dealer they will be able to tell you what to expect. I have used Michelin non RFTs for years (on other cars). No road noise issues. One time I had to buy Bridgestone, it got so noisy after about 10K that I had to take the car to the dealer and they confirmed it was tire noise. On the other hand the bridgestone has lasted considerably longer