Originally Posted by Aushiker

My pump of choice is a Lezyne Micro Floor Digital Drive XL (has a digital gauge). Not frame mounted so you do need a way to carry it. In my case it does in the top section of my Bike Bag Dude frame bag.

I run tubeless so have a reduced the risk of actually requiring it for an emergency situation but in terms of needing to change tyre pressure, say from going from beach riding to back on the road I find that it takes about six strokes per 1 PSI with my 4" tyres.