How many pumps does it take to reach 100 PSI?
A: 100-120 depending on the size of your tire and tube takes a few minutes of pumping. its hard work.With iPUPM MICRO every drop of air you pump ends up in your tire. 100 % efficient. Otherwise it is impossible to get to those pressures. But basically the iPUMP is for saving you when you get a flat tire in the middle of nowhere. And 60-80 psi is easy.Shipping is free.