Check tire pressure monthly


Properly inflated tires maximize safety, tire life and fuel economy.  Tires that are 8psi underinflated reduce tire life by 10,000km and increase fuel consumption by 4%.  That’s like adding 4¢/litre to the price of gas.  Source 


Once a month check your tire pressure using a tire gauge.  On the frame of the driver’s door or inside your glove box is a label that says what the tire pressure should be.  Most service stations have a free tire hose.  For more details, check this link.