“Tire pressure is the most overlooked aspect of bike maintenance that potentially has the greatest impact on performance!  Not only does it have an affect on how the bike handles, but also leads to decreased fuel mileage and accelerated tire wear.”

Here’s MY generic guide :
Sportbikes- 32 PSI -front, 34 PSI -rear
Cruisers – 34 PSI -front, 36 PSI -rear
Touring – 38 PSI -front , 40 PSI -rear