can anyone help me i have a 307 which has a really bad vibration it is so bad it is loosening the nuts..:nono: it seem to start sligthly at 50 and get worse the fast i go its comes though the floor and vibrating my legs as well as the steering wheel. i've had the wheel checked the tracking done the brake disc's changed, peugeot have had the car about 3 times and still can not find anything wrong is they anyone that may know..........