My brakes don't seem to work that well, they do stop me but I have to push the peddle pretty hard especially at speed, also noticed when slowing down, ie slowly pulling up to traffic lights waiting for them to change and braking very gently, the car kinda feels like its pulling backwards and forwards if that makes sense? and lastly... damn brake dust! my wheels are covered in the black stuff after like just a 10 mile journey, I'm having to clean them practically every day, is this normal?