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UFO et al, I doubt anything happens right at the tire max rating - as someone said, its just the point the mfr wishes to limit their liability. Overinflating a tire by 12% (44~50psi) would be well under the FS JacobAziza quotes in his post (3 to 4x rated pressure). If the mfr rated the tire for its actual bursting/unsafe pressure, then it'd be on the verge of a lawsuit with every tire. I definitely wouldn't be doubling the rated pressure though, as Capri said the tire gets weaker, does the fatigue resistance relate directly to pressure?? (would it be 25% of 200psi, or 75% or ???)
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