Most cars take around 32-35psi
35 or 38psi?
44 psi
30 psi
check the tire... it has a recomemdation on how much psi you should put and a max you shouldn't pass.
as much as you want or whatever the tire recommends
To make tires inflate you need to put air in them
The correct air pressure for tires is on a placard on the drivers door. The number that is on a tire itself is the maximum pressure that should be put into a tire, a tire should never be filled to this amount. Being up to 4 psi over the recommended pressure on the door will slightly improve gas mileage and usually improve handling. Typically tires should be inflated to around 35 psi.
In standard cars is it simply compressed air. The same mixture we breathe.
You should inflate the tire to the pressure recommended on the label on the drivers door jamb of the vehicle, not the max press on the tire.
Motorcycle tires.
Most likely around 32PSI. But check on the driver's side door jamb. There should be a plate there that gives suggested inflations. Never exceed the max PSI rating printed on the sidewall of your tires.
Tyres tend to loose more air in cold weather rather than hot!