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Theres still much more force on the centers
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You've yet to say why. Sure, hoop stress increases - but that's not solely on the center.. Unless, somehow, there's a pressure gradient such that only the center of the tire has higher air pressure
There's a mix of bias ply facts being applied to radial tires here.
Yes, you're increasing internal stresses on the belts - I'm well aware of that (that's what we're trying to achieve here). What we're doing is using the FoS built into the tire design.
How did I test my tires? Chalk. Chalk the tires, drive a little, watch for uneven chalk wear. Didn't happen.
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If you understand how tires are made (and I do) dd your tires above your specs can cause belt seperation, material fatigue, warping, ect.
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I'm halfway through my tire's warranty - and have more than half of my tread left... No abnormal wear. And given the relatively low pressures compared to the high limit for steel fatigue, I highly doubt we've passed the fatigue limit for steel (which is ~50Kips). I'd do the calculation right now for you, but it's late and I've got a few more papers to read before bed
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one tiny pothole at those #'s will give you a sidewall bubble in a heartbeat
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I hit about 4 pot holes much larger than tiny - at about 30mph earlier today... Woo construction + dirt road (water must have caused some mini sinkholes). Tire's are perfectly fine - it's worth mentioning my car was fully loaded (5 adults + 150 or so pounds of cargo). I'm more worried about cracking my 100% AL oil pan then my tires (for some reason, VW put that as the lowest point o.0).
If it makes you feel better.... Here's what I and many other on this board are trading....
I'll trade higher pressure for my frequent (at least a few times per week) tire checks. This, compared to so many other drivers tooling around with under inflated tires that don't check until their tires look flat. I'm trading higher pressure for better hydroplane characteristics (again, lots of rain for me) in addition to slightly shorter stopping distance - this according to NHTSA.
But, that's all I care to respond to at the moment - well, it's not that I don't care - it's just that I've got some work to do before bed
<-- so pardon if my response seems detached and shot gun peppered in it's points
