I never could get the pressure high enough with a 16g so now I have a Bontrager pump/CO2 combo that lets me pump about 40psi easily into the tire and then blast the 12g into it to get it to around 110. By far the best combination. It also mounts under the bottle cage with the pump on one side and two cartridges screwed onto the other side. Perfect combination paired with a tiny saddle bag (holding a spoon, two tubes, and a tool).