this is a pretty stupid question but my tires are always popping. im riding a iron horse for sport check until i get my sunday. now everytime i get back into bunny hopping up stuff . if i don't do it perfect it makes a noise like today i was biking and i went up a curb. i landed but when i landed you could here my rim hit the ground. so i pumped my tires and i got it again. and then i messed up and hit the edge of the curb and i heard it again i pressed on my tire it felt fine i double checked it and as i squeezed it squeed out all the air? is my tire popped or flat. and everytime i don something and my tire hits a edgo of something it pushes out alot of air could this be from no cap on the spout thing.
No cap on the spout thing? thats called a valve stem. You're not running enough air in your tires and pinching your tube between the rim and curb or whatever you're landing on. Run at least 60 psi, thats pounds per square inch. Better yet run 75 to 80. And don't call your girlfriend an iron horse and what is sport check?