This is my first flat tire...
I have alex rp15f rims, 700x23 kenda kontender tires, a avenir tubes
So last night I was riding my bike and the pressure was really low, so I filled my tires to the recommended 125psi. I road around for a bit and everything felt great. I brought my bike back into the garage and went to bed. The front wheel has been a little out of true for a while but not too bad. Everything was peachy.
So then I go to work the next morning and come back and decide to go for a bike ride. Turns out my front tire is flat! The front tire had been pushed so that it was partially off the rim. I tried to reset the tire and fill up the tube but it didn't work. A FLAT I was dreading this...
So me being far too hasty, grab two rulers and use them as tire levers to take off my tire completely. Then I pull out the tube and there is a ~5 inch long cut along the side of the tube. I later looked at my tire and it appears that maybe the beading on a small segment was partially worn away, but I can't tell for sure and I can't match this with the location of the rip because I noticed it later. The top of my presta valve cap is missing as if all of the air violently rushed out from the valve and blew a hole through it (the side walls of the cap remained screwed down).
I don't think I ripped the long cut into the tube with my makeshift tire levers, and I don't see anything that would have caused the flat. Like I said, when I put my bike away it was fine, when I went to get it the next day the tire had come off and there was that 5-6 inch cut in the tube. It probably got 30 degrees warming out after I filled the tube, so perhaps the air expanding caused a problem? But my back tire appeared to be fine. I read that long cuts like that only can happen if there is a problem with the tire itself? Is this true? What should I do?
I'm afraid if I just replace the tube I might get another flat right away, but I don't want to replace my tire/frame/etc if I don't have to. I plan on taking the wheel, tube, and tire to a bikeshop tomorrow for assistance, but I'd love everyone else thoughts especially before I buy anything. Could the wheel being out of true lead to this?