However, "prevention is better than cure" so it's best to keep your tires properly first. If you take care of your tires, they return the favor. Automakers improve the performance of cars every year and yet the only thing keeping the car in contact with the road are the four pieces of rubber on each corner. The air pressure in your tires is critical to performance and safety. Under-inflated tires will roll on the rim and the car can be less stable particularly when cornering.
Overinflated tires tend to jump on the surface of the road. Besides the security implications under / over-inflated tires wear too quickly. If you see a tire that is worn in the middle, but the tread on both inner and outer edges, then this is usually a sign of more inflation. It is then recommended to get the tire repair services for your car.
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Regarding the tire pressures are not based on "research" to the tire but the appearances are very deceiving. Use an accurate gauge of the tire pressure. Many cars are not even spare parts. However, if you have a spare room, you may need one day. Your reservation must be useful and functional. Pressures should be checked every 2-4 weeks. It is normal for tires to slowly lose air through the rubber.
Tire pressure should be checked and adjusted when the tires are cold as the heat will temporarily increase pressure. Tire pressure for your vehicle is indicated on the tire placard or in the vehicle owner's manual. Be ensures that valve caps are properly adjusted because they keep unfamiliar objects out of the core of the valve. Too much pressure can be as dangerous as too little pressure.