Just sayin' hello from Stafford VA. Little about myself - I'm 26, married to an awesome woman and have a kid on the way. Been in the Marines for 7 1/2 years, 4 tours to Iraq....yadda yadda.....Just got a Gary Fisher Marlin 2 days ago, already put about 15 miles on it. I'm loving this bike already! I've noticed that the stock tires on it leave a bit to be desired when not on the pavement... I've noticed that there are a bunch of different types of tire options (as in folding, pinch, etc) what does this all mean and what kind of tires are the stock ones on my bike? Looking to get some new ones and I'm confused as all hell....