I got over 8,000 miles out of the front stock Stones and over 10,000 miles out of the stock rear Stones. I run 42 psi. I would rather sacrifice a very tiny amount of mileage and have some grip, before 4 miles by running what is recommended. I also believe 45 is above the max pressure recommended by the manufacturer for that tire. I see nothing but problems. I would rather be safe. Besides, in less than a half a mile from my house, I can get to the edge of a tire, so there are curves nearby and I would prefer to be able to round them without mishap.