Correct tyre pressure is essential for proper vehicle handling, to minimise the risk of wear and tear on your tyres and also from more serious problems like a blowout.
To keep your tyres in top shape, check the pressure once per month and add air if needed

You'll find the manufacturer's optimum or recommended tire pressure for your car on a sticker in the door jamb, or in your owner's manual.

Some models even place the stickers in the boot Recommended pressure is usually between 30 and 35 PSI.