For an Association football, 8-12 psi. For an American football, 12.5-13.5 psi. For an Australian football, 9-11 psi.
The correct tire pressure for a Harley Davidson FXD is 30 psi for the front tires. The correct tire pressure for the rear tires is 40 psi.
According to the owners manual, the correct tire pressure is 29 psi.