by Burgerman » 06 Oct 2012, 13:01
When running stupidly fast turbo bikes years ago, we had a strange tyre deflation problem on my rear wheel. Traced to the tyre valve getting opened by the g force of the wheel spinning at about 200 mph. So I fitted an aluminium valve cap, ptfe tape on thread. That sealed it so no more bother. But it also meant a spanner to remove the valve cap. So that would work too.