how about the valve stems?
I know with cars, this at times is a common small leak issue do to cold weather and being to physical when pumping air.
I find it weird how they can withstand a 2 hour rough ride and not lose any air, if it was a small leak wouldn't they just give out during the ride??
is it better to get the tubes online or at a lbs?
any suggestions on which tubes are better, in terms of being stronger?