It seems the cars in general suffered several suspension failures over the SMP weekend.....
Category powerbroker / manager Barry Rogers spoke of failures due to "unusual circumstances". He spoke of repeated use of the track of late by Supercars had created ruts on the edges of run off kerbs, which when S5000 dropped into them wishbones got bent. He did say it was under control and at Bathurst was confident there would be no issue.
Full story:
https://www.speedcafe.com/2021/11/22...r-at-bathurst/