Underslung tool bottle holder question?

[Rob K]

Thats Nice!!! , How do you keep the tyres clean?

 

The tyres have certainly been conversation starters 

 

I originally planned to just replace them with black ones, but was talked into keeping them, now they've grown on me.

 

Surprisingly, they haven't required much maintenance and have been subjected to quite a bit of greasy mud and the like so far.