I was told rubber loses air naturally with time, they are gatorskin tires on a 1996 cannondale R300 aluminum road bikeI rode a 200 miler on this bike and the pressure kept dropping from 120 lbs to 80 lbs pressure between fill-upsWhy? Is it pressure put on the front tire? I don't ride it but every few weeks, and the pressure dropsI can understand thatBut why during a ride? Is this bike fit for a 115 mountain climb ride? There may be some in the tire inner wall poking at the tube, though I doubt itI've installed three tubes, presta, and they kept blowing at the valveI hear it is better to ride on a full pressure tire because it is better for itW/o telling me to get a tune-up, what advice may you have?
can not use at all boy are you in for a shock after you waste about 10 hours a week futzing with tires, glue, sewing needles, and making money to buy $100 tires - you may save 2 minutes a week riding nice! wle
You have to use tubularsLOOK at the rims, it will be obvious that you can't use a standard clincher tireBetter yet, try itEven if you do succeed in mounting the tire on the rim, it will blow off as soon as you get any pressure into the tire
blowing at the valve' - is that different from leaking? take a leaky tube out and do the water-tank dunk test to see where the leak is how are you measuring pressure? because you can easily let out 40lbs, in a small whoosh, just getting a gauge on, if you aren;t fast and with a presta valve, you have to let some air out just to check it [if you aren;t using a pump/gauge] wle.
