Originally Posted by
chico1st
damnit machka stop spreading these crazy rumors! I never said i flatten them at night and pump them in the morning! I 'top up' my tires every other day (or every day when its really cold) but I have to let some air out of them before i can pump them. At my LBS I was taught that you cant start pumping a tube over 80psi, which is true I cant. You have to depressurize it to ~80psi and pump it back up to 120.
You say that you dont have to top up your 110psi tires for months, but my tubes bleed some air and depressurize down to ~90psi which is too low pressure for me. If you only have to run at 90psi then I am quite jealous of you maybe thats where the tire pressure starts to plateau but I cant do that.
You need a better pump (or a little more butt). I keep my road bike tires at 120+...and typically top them off when they are still 100-115 without having to let additional air out.
That said, it IS a good idea to break the seal of your presta valve...which of course will release a short blast of air, prior to putting the pump head on.
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