Just a word of caution from a tire engineer.
Increasing the inflation pressure above the vehicle tire placard can have negative affects on other properties, some of which affect safety. You'll get better fuel economy and the steering response will be quicker, but dry traction, non-hydroplaning wet traction, snow traction, and, obviously, the ride will be worse. You may also get more tire wear in the center of the tread, but there are other things that have a stronger effect on wear, so this isn't a 100% thing.
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