While neither Miele nor Siemens support it officially, it seems possible to stack a Miele tumble dryer on top of a Siemens washing machine. That works even when using the Siemens stacking kit, the one that has a built-in shelf .
The lateral distance between the feet seems to be exactly the same for both dryers. The Miele feet have a bit wider flange, so it would not hurt if you could shave just a little off of them. I did not do that, and it was a bit tight fit.
Even though the lateral distance is the same, the feet are not in the same depth position, which means that the front feet will sit a few mm towards the front, compared to the Siemens dryer. This unfortunately means that the original Siemens stopper block for the stacking kit will no longer fit. Therefore I designed this replacement block. You will need to print this and a mirror copy
The author marked this model as their own original creation.