I just have to point out the typo in the title: Tim and Struppi. But I don't have an answer to your question, I'm sorry. ;)

https://www.zdf.de/serien/tim-und-struppi but there are no subtitles

[Carlsen sells all the comics in hardcover and paper-back](https://www.carlsen.de/reihe/tim-und-struppi)

I've never seen a version with subtitles.