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https://www.tirerack.com/tires/tirete...e.jsp?techid=7 P.S. A little something on sidewall psi ratings: "It is important to note that the maximum load is rated at an industry specified tire inflation pressure that is often lower then the tire's absolute maximum tire pressure. The tire pressures used to determine the maximum load the tire is rated to carry is based on the sizing system industry standards applied to the tire. Sizing System Tire Load Range Load Pressure P-metric Light Load Standard Load Extra Load 35 psi 35 psi 41 psi Euro-metric Standard Reinforced or Extra Load 36 psi 42 psi However, the tire's maximum inflation pressure may be greater, such as 300 kPa (44 psi) in this example or even 350 kPa (51 psi). This is done to accommodate the vehicle manufacturers desire to tune the tires' high-speed capability, handling qualities and/or rolling resistance to better suit the vehicle." https://www.tirerack.com/tires/tirete....jsp?techid=21 Looksta me like there is plenty of latitude for interpreting sidewall "max psi" |
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EDIT: ^^ Okay, so I figured that part out -- that's a dynamic situation, we're talking statics... In any case... here's what I found from internet searching.... Low Profile for trucks claimed 5% lower RR... But trucking tires are likely a whole different ball game... https://www.conti-online.com/generato...rofile_en.html New LP tires v. LP when new ---- again, for trucks Quote:
So, deflection energy makes sense to me right now... We'll see when I wake up tomorrow :p <--I should really stop including anecdotal "evidence" in my assumptions :p |
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I think the chalk test followed by rolling forward a couple tire revolutions would be better than paint for identifying "bulge". The paint might be better for monitoring the effect of alignment changes in "the real world" (i.e. cornering/accelerating/braking). Quote:
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Here's a reason not to run too much pressure, granted I filled my tires to 40psi and the tires are rated to 35psi.
https://www.gassavers.org/showthread....&highlight=age Gary |
yeah I'll concede that when searching around after I posted what I did above, I see that playing with sidewall max isn't a prescription for disaster as I previously assumed. Particularly with Prius owners, those that used OEM specs had their outer edges wear out super fast because of increase heat/flexing, and those that used sidewall max had minimal wear, even including the middle of the tire.
And yeah, brucepick, your points about load capacity vs. psi make perfect sense :) |
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Not exactly, it happens to "normally" inflated tires too. Given that kickflipjr doesn't know the history of the tire in question, it may also be that an abused tire (pot holes, underinflation, manufacturing defect) is less suitable for over inflation, but it would also be less suitable for driving on in general, and one incidence does not a study make. I love how lug nut fixed his with rubber cement :) His failed at 32 psi. |
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He did say Quote:
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skewbe,
thank you for the tip. tried it (paint across the tread) and found that 60psi is too much for the rears, but not for the fronts. weight distribution right? |
Wow, 60 huh? Braver than me :) Weight distribution could be a factor in the difference.
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