Howdy, I run for a college team, but I cycle twice a week(usually 80miles per week). Here's my question, The last two times I rode, I got flats, one was from a goat-head thorn(not much i can do about that), but the last puncture was a small rock, I know bike tires are thin, but it was a really innocent type rock. My tires have quite a few miles on them, so I'm going to get new tires, (so in a nutshell) what kind of tires should I get that are thick enough so that the dangers of northern new mexico roads don't puncture me when I'm on a 1lane mountain pass road 20miles from town(I had a bad experience last time). Thanks in advance.