RE: Bicycle maintenance day! Cleaning my bicycle and replacing my back tire

how many kilometers you think you did with the tire?

I really don't know. I usually switch the back and front, but that was no option this time.

I run the chain trough an old cloth to remove any excess wax and possible dirt if there is any.

Maybe I should consider wax too, but I'm using it for commuting too and it sometimes can be wet.
Cleaning the key after each ride is a good idea. Maybe I should do that too!