Hey all, just recently started to get into biking, mainly for recreation. I picked up a used 08 trek 7.2fx from a friend for $200 and I was wondering if I can upgrade the tires from the 700cc x35 to something a little fatter, maybe 700cc x 45? Can the frame even accomodate a wider tire? I ride on pavement and light trail. Though it handles the road nicely, I just wasn't sure the stock tires could handle the trail. Any inisght is appreciated. Thanks!