[Brad the best]

I did some research this sounds lodgical

Years ago, a few tube manufacturers, under pressure to reduce the weight of their inner tubes began looking for ways to make a lighter tube. First they did a little market use analysis and determined that the worst time for a tube to lose air is when it's being used. As a tube is being spun while in use, they realized that due to the laws of centripetal acceleration, the air presents the greatest pressure on the outer wall of the tube. This lead to the obvious answer, they could shave the thickness of the inner wall!

By doing this, they've created tubes that are lighter, and yet, just as effective at holding air while being used. When the tube is not spinning, it of course, loses air at a faster rate, as the air is no longer constrained by centripetal forces, and presents more pressure to the inner wall (the thinner one).

if you believe that b.s your nuts .

there are to many explenations , i have wasted half an hour searching for an explenation .

what happens when you ask a bunch of nerds a simple question?

you get a complicated answer that doesnt really answer the question .