Quote:
Originally Posted by ACEV
He also said that he has seen very little difference in fuel economy when overinflating. While some may overinflate by 2 or 3 or 4 pounds for heavier loads, wet pavement issues and impact damages become significant.
Now, go do your own homework.
And remember, while trying to save a few bucks on fuel may be admirable, the real fundamental issue is that cars must be designed from the ground up for the purpose desired, as I implied before.
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Did you not read the whole point of this thread? Going from the factory spec of 30 PSI to the maximum sidewall pressure of 45 PSI I gained 7%. That is my own personal experience and many, many, many others have had the same result or even better. That isn't even over inflating, so there is still more to gain if I decide to over inflate the tires.
Clearly, your conversation with Marvin confirmed the fact that center wear on radial tires because of high pressures is a myth. But the vibration issue really struck me as odd. Tire/wheel vibrations happen when tires are not properly balanced. I don't see how increased pressure would create a vibration, unless the quality of the tire allowed it to deform under stress. Now, the entire point of the thread was to discuss if over inflating beyond the indicated sidewall pressure could have these results.
If you have a tire that deforms at 60 PSI, it's probably the worst quality tire in the world. As many have advised me in this thread already, modern tires are capable of handling more than their indicated max pressure.