The Civic had a set of mismatched junk 13s rated for 44psi, so I figured I'd bump em up to 50psi. If they wore bad, no problem, they were nearly worn out anyways. Got a noticeable reduction in rolling resistance but recently I discovered a 1/4" bulge in the tread, along with the sidewall peeling off the steel belt at the edge of tread patch. Still holds air but must have been minutes from blowing out. The other 3 tires look ok, so it is likely just old age. If you overinflate, I'd avoid doing it on old tires, and keep an eye on the tire condition.
hyperme, what tire brand/size is yours? 51psi sidewall?? I want a set of those...
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