On stock tire pressures, I've been running 32 psi front/ back and they run relatively quiet. Concrete tends to be louder than asphalt. Brought the civic in for routine maintenance and they did the usual rotate tires. Driving it the next day, the tire pressure indicator came up. Stopping to check the pressure, the Honda tech put 41 in the front and 35 in the back and I have no idea why. I'm at 50K so maybe he's trying to increase the life of the tires? Anyway, I put them back to 32 psi.