We have a 2002 road king, and often ride double. We know what the recommended air pressure should be...but does anyone have any experience with different pressure settings? Total human weight is about 300 lbs.
If you like a soft ride keep it low. I have an 05 Roadglide. Single I ride with 20 to 22 lbs with my wife 30 lbs. 35 lbs is max recommended for my bike. Check your manual for your model year and don't use pressurized air use a hand pump only to fill. The system does leak so you need to check once a month or so. Try 25 then try 30 and see what you like. Enjoy.