Originally Posted by
peterws
Thank you for all those brilliant suggestions, guys . . . .Now, i always understood presta valves were for high pressure racing bike type application, and Schraeder were for motors, and mountain bikes.
I know of many racing aficionados who simply over pressurised their tyres to save a millisecond or so. But they blew either their tyres or their valves thereby not only failing to win, but also to finish .. . . I don't use a tyre pressure gauge; rather -
when the pumping gets tough . . .
I've had enough.
And your max pressure for a presta is . . . .drum roll . . . .
AFAIK, there is no difference in max pressure between Presta and Schrader. Presta is preferred in high pressure tires because high pressure tires go on narrow rims, for which the wider bore of a Schrader valve causes structural weaknesses.
I've never heard of a racer blowing a valve owing to overpressure, and stories of others' lack of judgement don't really figure in my choice of bike valve.