Tire Pressure Question

[sirben711]

I was debating if this should go into the wheel or tires section or not...landed here because it is a more general question.

Ford recommends that I run my stock Ecoboost tires (Eagle F1 Asymmetric all season) at 32psi - but I actually run mine at 33psi because it feels better on turn in. Fine. No problems. No excessive wear signs etc.

However....I am going on a road trip soon and wanted to see what Goodyear recommends for my tires. And they are very vague. "up to" 51psi. Obviously that is more directed at heavier cars. But that is a huge range form 32psi to 51psi.

So my questions are:
What gives for the huge difference in psi?
Would a higher pressure give me better millage for the trip?
Does the pressure even matter as long as you are not too high or too low?
How can Ford recommended a certain pressure despite different tires having different properties?


Resources:
https://www.goodyear.com/en_US/tires/eagle-f1-asymmetric-all-season/2614-10420735700000.html

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[Johnny Rockit]

Yes, higher pressure will get slightly better mileage at the expense of premature wear in the middle of the tread.
32psi cold is base line. My car typically runs at 38psi after warming up on the road. These pressures were all 38 when I parked the car. The first screenshot is a fresh update. Go with what the manual says to start at and unless you have a Cup Series pressure gauge, getting the pressures exactly the same is not easy. Well, for me anyway.