I have just taken the wheels off my SL and given each a proper wash. One thing struck me as very odd. None of the wheels has any balance weights attached. I had the wheels refurbished last year by my local MB and that's the way they've come back. I've had no vibration or judder at any speed ( albeit I never drive over the limit ) and tyre wear is completely even. Going in for four new tyres tomorrow, it'll be interesting to see if my local kwik-fit decides weights are required. Is it normal not to have any balance weights at all ?