tube punctures near valve my road bike got a puncture in the front wheel yesterday while I was riding down a big slope, it happened when I was braking the bike then I heard a pop. I stopped and replaced with a new tube, resumed riding, and another pop when I was down a small slope, I remember I braked a bit as well. Two punctures appeared to be near the valve.


I found a hole in the tire, could it be the cause of two consecutive punctures?


Also found that side of the wire has a lot wear


while the other side of the wire has no wear at all


I checked the rim and its tape, didn't find any obvious spike or anything.

Question 1: do I need to replace the tire?

Question 2: what causes the wear on one side of the tire?

update: just found out the second tube I replaced, is a 650/18-25c tube, my rim is 700...
It seems that brake pad is touching your tire on the one side. Make it parallel to rim and/or move it a little bit down, if you don't same thing will happen to your new tire!

(via http://www.parktool.com/blog/repair-help/linear-pull-brake-service)