This is driving me mad now. front right rattles/knocks when going over uneven road/manhole covers/rumble strips/ cats eyes etc. not over big bumps/speed bumbs etc. Worst on suspension level 3 and worse at about 20-35mph. still does it when touching brakes so don't think its loose pads. car done 160,000 miles. here is what i have tried or done recently: anti roll bar drop link replaced. both upper arms replaced about 6months ago (TRW) so ruling out them. arnott air springs fitted about 2 years ago, new rubber top piece but shockes not replaced. been on the MOT wobble ramp at national tyres - they couldn't hear anything or see any excess movment anywhere (except one rear anti roll bar link but can't see how that makes front end knocking) engine mounts visually look ok. anti roll bar bushes look ok but still wondering if its worth replacing anyway? Lower arm bush (at chassis) cracked but no obvious movement and no noise on the wobble ramp. could it even be not suspension related and something else? but it does seem worse when on level 3 so I would assume it is suspension related.