@morten-nørgaard If you found this answer to be helpful/correct, please follow the StackExchange convention and mark it as the accepted answer.

Mod Note: The OP edited the question to clarify the type of bike, and the type of surfaces. I have subsequently deleted the argumentative chat messages.

Welcome to Bicycles SE. We're looking for answers with more focus. Please consider editing your answer to more directly answer the original question. An answer like this that veers into unrelated territory is likely to get additional down votes, be flagged for moderator intervention, and possibly deleted.