Motocross bikes and dirt bikes in general use tube-type off-road knobby tires commonly inflated to 12 to 15 psi. These knobby tires come in a wide range of side-wall stiffness ratings and tread ...

How much air should be in your Harley's tires? The right PSI can vary based on the model you're riding, and maybe even differ ...

Acceptable dirt bike tire air pressures range from a low five psi, up to 20 psi, and even 30 psi for dual purpose bikes on paved roads ridden at high speed. Read more: The 15 Most Reliable SUVs Of ...