Hi everyone!!!

Maybe this is a newbie question, but i need your help!!!

I just purchased an old road bike that has 700x25c tires with presta valves.

I have a mini pump that can inflate both presta and schrader valves but it has no PSI gauge to measure how much air i put in, basically i have no way of knowing how much air i'm pumping into my tires.

My question is, is there a "feel" by touching and pinching with my fingers that's somewhat acurate??? i know that there is supposed to be virtually no "squishiness" but i also don't know if the tires are supposed to feel rock solid, i don't want them to blow up wen i'm riding!!! :S

The tires are prety old and the side walls look dry, i can't read the max PSI because the letters are worn off and I WILL be buying a pair on new tires next week, but for now i would like to ride my bike just to get the feel of it.

Also, my mini pump says 80 psi max, and i think that road tires require at least 100 psi, do you think that the mini pump can get them to 100 psi??? or a decent amount of air to actually use the bike??? the "cilinder" (part of the mini pump that holds the air inside) is not plastic, it's aluminium so i think it's a bit stronger that a normal plastic pump.

Thanks in advance for your help!!!

Cheers!!!