Kevy427 wrote:What about valve extenders and a valve key? You can get tubes with 60mm (or 80mm) valves, one extender as the 60's work with 50mm deep rims, and a valve key
Exactly what I've done - but to do that, you need tubes with removable valve cores and not all of them are. Contis apparently are (and that's what I got. With a valve key too).