^^ oops, corrected. I actually try to run it at about 105-110 psi, but it is hard for me to tell because I don't have a gauge. I've been doing it by feel so far unless I get a hold of my friend's Serfas pump which has a gauge. However, at around 100+ psi I know it is very hard for me to squeeze the tire whereas right now, no matter how much I pump with mine, I can still squeeze it and I don't feel like I'm getting anywhere with pumping. I am worried about riding on tires with pressures that are too low. I counted up to 30 pumps and it still felt no different than before, even though there was already air in the tube when I started. I haven't heard of Silca, I'll look it up. thanks



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