Why Bike Tire Keeps Going Flat. Tires could also appear deflated due to tire leaks failure of the valve system punctures overpumping road hazards and others. Driving over a large pothole or a curb may flex the tire sidewalls and make the tire lose air.

These are the same for top end clinchers as well as big box k. Wear And Tear of Your Tire or Tube. I key my tire tube by aligning the valve stem to the logo on the tire.
It is also responsible for keeping the air inside the tire.
Tire Keeps Going Flat. This will show you if the punctures are in a repeated place and if so help you track down something embedded in your tire. Check the inside and outside of the tyre at this distance from the valve and remove the glass thorn debris from the tyre that is stuck in it at this distance. Voila - lost air pressure in your tires.
