Hey guys,

after the TUV post earlier, I started searching at google.de in German about Spacers. I couln't find anything regarding it being unsafe. On top I called Tuning house Hamann, AC Schnizter, but it is already too late to get in touch with anyone, shops are closed. However, I wrote them an email and will post the response.
When I searched on their site, they had their on spacers listed for sale up to 30 mm. Zubehör Leichtmetallräder

I guess if a tuning house like Hamann installs them, how bad can it be?