The leather in M4s is a bit sensitive and the stretching will be much more noticeable in the light colors. The good news is though it seems like it stretches when u first touch it but it just stays like that forever it doesn't get much worse like doesn't age exponentially but obviously with fair treatment.
We considered using multiple products that are recommended on here by members such as leather masters and leatherique and while I didn't try either one I went directly to bmw and got their leather cleaning equipment. To be honest its not half bad, it might not be as good or as strong as the other stuff but its enough to get the job done.
We also decided to use BMW products because if something does happen to the leather then we would be like look... all we been using is your recommended products so technically you owe us new seats because your own products did this
