On 06/04/2014 08:05 PM, Felix Miata wrote:
On 2014-06-04 19:29 (GMT-0400) Anton Aylward composed:
If you look at any real world tire you will see that it isn't actually round.
For the definition of "round" applicable to automotive tires, when not "round", various problems can ensue, such as:
excessive vibration accelerated wear elevated noise increased susceptibility to general failure, such as tread separation accelerated wear on other suspension components
I'm aware of the phenomena you mention, but they all result from damage or misconfiguration. I'm talking real-world physics. The weight of the car pushes a tire out of 'round'. It it were perfectly round the contact with the road would be minimal. Reality is the bottom of the ire is flattened and has a contact surface about the same as a size 9 man's shoe. If the ire is under-inflated the weight of the car will push it further out of shape and it won't be able to do its job of 'smoothing the bumps' properly. And as one of the illustrations I referenced shows, when a tire passes over 'stone' in the road it is pushed out of shape. That is the purpose of a pneumatic tire. It it doesn't do that then something is wrong, possibly the tire is over-inflated and so gives a rough ride. The whole point of a pneumatic tire is that it gets squashed out of round. -- /"\ \ / ASCII Ribbon Campaign X Against HTML Mail / \ -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org