Why do car tires lose air despite having no openings and why do they not pop when they do?
In: 4
Osmosis. Not only is the tire not always perfectly sealed, air can permeate through materials at a slow rate. The air is just moving through the rubber
The valve is an opening. If you want to get air into something, then whatever it is will generally be able to leak air.
Oxygen molecules are *so* tiny that they can squeeze out through the tire walls. Give it enough time, and that “seepage” adds up so much that you’ll need to add some air to the tires.
[deleted]
Car tires aren’t perfectly air tight so air is able to slowly leak out.
Also, as air cools, its pressure drops. So even though there is the same amount of air in the tire, there is less pressure so it will appear deflated.
Most of the time they don’t. Generally speaking, when your tire pressure light turns on in the spring/fall it’s caused by the difference in temperature effecting the air pressure in the tires, but the actual amount of air in the tire doesn’t change.
Latest Answers