Am I the only one that thinks the brake dust is excessive?

I've owned many high performance cars over the years and I've never experienced the amount of brake dust I'm getting from my new 328xi. Last weekend I spent several hours washing, claying, and waxing the car only to have significant brake dust covering the wheels 2 days later after less than 50 miles of driving. By the time I had a chance to clean the car (one week later) the wheels were completely covered. Is this normal and, if so, will it get better with time? I realize that increased stopping power comes with additional brake dust as a trade-off, but this is beyond what I've ever experienced before.