I run 90 PSI in my bicycle tires. They're rated for 100PSI min, 130 PSI max, and the ride is brutal. The tires are 22mm wide. If my frame would accommodate wider tires, I'd throw my 32s on there.
I run my 700c*32 tires at the sidewall max 60psi. I would go higher for lower rolling resistance, but I have enough problems getting tubes to 60psi without blowing a tire off the rim or puncturing a tube.
The Subaru gets a 33% overinflate to the sidewall max 40psi. I have no need to go higher.
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