car shuddering

[sideways18]

i no this is a commodore forum but my mates falcon is shuddering constantly it does it when he brakes which could be the disc warped it does it under acceleration too which i suspect is a missfire but not sure and it does it when decelerating with out braking

[pablo]

Could be a knackered uni joint!

[Hangman]

Or a wheel out of balance, though that would probably be more at high speed.

I'd be checking the uni's first, grab the tailshaft and see if there's any play in it.