Stickyjazz...
It sounds like the brake fluid has eaten into the finish on your wheels... remember that factory wheels are painted and finished with a clear coat, and brake fluid eats that up real good.
Likely, all the scrubbing and all the cleaners won't do a bit of good; you'll probably have to strip and re-paint.
In general, if you do use a wheel cleaner, try something like Mothers Wheel Mist Multi-Purpose or a similar product that is specifically formulated and safe for painted and clear-coated wheels. Cleaners for chrome and bare metal wheels are too strong for use with painted wheels. I also recommend to use a sponge or a soft car wash mitt before trying any sort of firm brush on stubborn stains. Remember that this is paint, and even a plastic brush will scratch the surface (unless it has very soft bristles).
And Dakmis, that's what I'd try on your wheels with the rust, though I bet there's a lot of damage that's already been done on the finish, unfortunately.
In either case, follow the directions and try repeated applications.
Remember that an ounce of prevention is worth a pound of cure.
Good luck!
