Kia Carnival Owners Manual

Tire pressure

Always observe the following:

Check tire pressure when the tires are cold. (After vehicle has been parked for at least three hours or hasn't been driven more than 1.6 km (one mile) since startup.)
Check the pressure of your spare tire each time you check the pressure of other tires.
Never overload your vehicle. Be careful not to overload a vehicle luggage rack if your vehicle is equipped with one.