Originally Posted by
mrund3rd09
I'm a little stumped. I've looked around, and there's no difference b/t schrader and presta in terms of air retention. So why aren't schrader valves suitable for 95 psi? I have a vintage bike, not one of those carbon fiber ones.
Schrader valves are fine at 95 psi. The stem holes for schrader valves are larger than those for presta, which is important on the narrow rims used on racing bikes (which are not synonymous with road bikes). I.e., the larger hole can make the narrow rim significantly weaker at that point.