I use my car's pump. I have a portable car pump that works off the lighter connection. The head screws on to my bike's schrader valve, and pumps it easily up to 100 psi. I lose a little air in the tires when I am unscrewing, because it's not quick release. But that just brings the pressure down to about 90, which is what I actually want it to be. Now if I could figure out a way to convert the car pump to quick release for a bike, I'd be set!