Picked up a new 2019 M5 Comp back in April, had the running in service done, then a few weeks back i had this very strange noise appear from the rear of the car.
It only appears to happen from cold start, only happens for about 5-10 mins sporadically, then goes away.
I've seen something on the US forums with a similar problem, but not on the UK one.
its going in for a check tomorrow and hopefully the dealer can fix it.
https://f90.bimmerpost.com/forums/sh...1569843&page=5