Always make sure your tyres are inflated to the correct pressure. When inflating your tyres, always make sure that the gauge is accurate. Never bleed air from tyres / tubes, which are hot after continuous running. Always make sure that the tyres are the correct pressure at regular intervals (optimally, every fortnight).
Make sure that your tyres have valve caps, which are screwed on securely to prevent air leakage and prevent dirt and other particles from entering the valve pin area. In vehicles fitted with radials as original equipment tyres, make sure that the tyres are inflated to the specified minimum on the vehicle manufacturer's recommendations. You will find this on the tyre pressure placard/sticker, which is usually placed near the driver's right hand side door or please refer to the Vehicle Manual.
It is advisable to occasionally check your car's suspension, especially if you are driving on bad roads.