Originally Posted by
1989Pre
Hi. Me again. I pumped my tires up to about 160 p.s.i. a week-or-so ago, and haven't ridden the bike yet. Now, both my tires are flat. Does air leak out of tubular tires more quickly? Or is it just from the fact that the p.s.i. is so high? The bike has not been in the cold.
Likely latex innertubes - they don't exactly leak, but air diffuses through the rubber a lot faster than butyl. Same is true for latex innertubes in clinchers. A week will usually drop the pressure too low to ride.
Doesn't mean you "don't" have a leak though.