Was driving around and sudden got horrible rumble/vibration like very fast tapping when turning the wheel even a tiny bit.
Stopped and had a look underneath and find this below
Drove on as needed to get home but after driving a few minutes I stopped again....as I was reversing into a space I turned wheel to full lock and noise/vibration completely stopped and has not happened again now
Has anyone seen a gunky mess like this before from this area??