I have been riding only sporadically the last few years. But early this summer I lost 30lbs and the bike now feels good again. I just got my first flat on the rear tire and I noticed there are "some" threads showing through, on quite a few spots. I changed the tube on the road and it got me 4 miles home but I'm wondering if I really need to change the tire right away. (even though I'm going to get a new tire tomorrow).
also, if any bike wizards are tuned in. My stem seems too long. I read somewhere that the front part of the stem should be measured with elbow from from of seat to back of stem, and that's what mine is. But them my stem is forward about 4-6" and it just seems like it is hunching me too far forward. what's the rule?