HELP!!! My beloved BMW 320i Touring (F'Reg) has started juddering whilst at speed in drive. Anything above 60 and it shakes violently, drop it into third and it pulls like a train, back into drive and the shakes start again. I am thinking the gearbox has a bearing gone. But I thought I would check the oracle of all things cars first (Thats you lot by the way) Any clues? Thanx Gary