I raised my pressure to 37 pounds all the way around before I went to Kansas City last weekend. The ride was decent and the handle was good. I even saw a significant increase in my gas mileage (~17 mpg on Interstate +80 mph with some inter-city freeway driving). But... when the temps were up to 87 degrees yesterday I check the pressure and it was 42 pounds. With this in mind I don't think I will go any higher on my cool weather pressure of 37.