Look at wishbone mounts. If worn they will move forward relative to the car when you set off or accelerate hard, when you take off power they will move backwards due to engine braking. This can result in knocking. Also if very worn the tyre will rub on the bodywork in the wheel arch. To check, get a mate to watch for movement of the wheel (relative to the body) whilst you let the clutch in sharply to take up the drive.