i have a problem with vibrations that started a few weeks ago. It feels like when i go over 50 mph i feel a vibration through the steering wheel, but then i feel it in my seat, on the pedals and on the door and i can here bits and bobs rattling. Go over 90 -100 mph it seems alright. I have recently put 4 new tyres on but it started after that and i checked the balance on them again but no change. Any one had this problem?