Just looked at ours which looks clear (to the naked eye at least).

Our M3W is a very early 2012 model but the chassis was replaced in 2015 because of a big crack near the upper wishbone mount - it therefore now has the integrated welded brace rather than the bolt-in brace and has only 4 or 5 thousand miles on the new chassis.

What is the current experience of cracking in the vertical tube? Looking through this thread, this cracking seems (so far) to be occurring in older higher mileage cars with original chassis (most presumably now with the bolt in brace) - is that the case??

Is it worth collecting some more systematic data on the incidents or are MMC giving any indications to those who have taken their cars for fixing.

As a community, we want/need to know if it is a risk for all versions after a certain mileage or for more specific versions of the car.

Part of our concern arises in the context of our 1500-2000 mile tour scheduled for mid Aug to early Sept going from northern Spain through France/Switzerland to Grindelwald for the Treffen and then back to the UK. However, the only realistic mitigation for chassis problems on this kind of trip is good breakdown cover!!