OK Ive had 2 flats in a week and it sucks, up until now Ive just been using a reg tube and a tire thats about 60% worn due to the friction rollar. I live about a mile up a hill from my usual route and walking that bike up that hill just RUINS MY DAY. So Im going to war with road debri and decided to Fight back, I just ordered 2 new tires plus 2 thorn proof tubes plus 2 nomore flats tire liners. Bringing out the the heavy artillery now............Im going to win this battle!