Perhaps we should discuss how poor the gages are on the car tire pumps. They can be off by over 10 psi in my experiences.. They always warn bicyclists not to use them for that reason. Also, they heat up a lot so you increase pressure at highway speeds if you inflate cold. I would say the concern isn't going beyond the limit of the sidewall by a few psi, but in how you do it and using what equipment, If you have other data, please enlighten us.
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