[FONT=Comic Sans MS]please can some one help. I have an e46 m3 with a vibration running thruough the car from the diff. there is a wheel bearing noise coming from the back also when cornering left, the specialiast told me the diffs knackered . ok... but is there an engineering company that rebuilds diffs. Also the reaer trailing arm bushes are severely worn.????? what are my options , i dont like the chuck it away buy another one if the genuine part ,,,ie the diff can be rebuilt by a suitably qualified engineer or specialist. any help info or contacts would be greatly appreciated.