I found another chassis crack today, not as serious as the others but worth checking out. I heard a new noise, a rattle on the over run particularly and from the back. finally traced it to a cracked through tab that connects the forward end of the rear bodywork to the rear end of the chassis, on the lower edge. It is just behind the rear exhaust support bracket. The front of the car is at the top of the photo. I hope that all makes sense.
Both the LH and RH tabs have cracked through and will require welding back and reinforcing. My finger is pointing to the crack in the photo. I have G56 exhausts that are a bit more weighty than standard but are well supported, the brackets are steady and undamaged, so I don't think that is a problem. The lower bodywork moves about more than it should with these brackets cracked through. Worth a check. It would be interesting to see if any others are cracked. My car is a 2013 one but the chassis was replaced in 2015 and it has done about 7000 miles with this chassis.
