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Why inflating is important
A tire holds air to give it the correct shape and firmness to carry a vehicle down the road. The amount of air inside the tire is measured by the amount of pressure per square inch or designated as psi. This number comes from the part of the tire that comes in contact with the road, or the contact patch. It is the portion of the tire that is not completely round.
A tire that is properly inflated will look almost round while one that is under-inflated will appear flatter. The number of psi that must be maintained in the tire is what is required for the contact patch to be at the correct size.
A tire that is over or under-inflated is at a higher risk of damage. It also lessens the stability of the vehicle when traveling. For example, a tire with too much air won’t have enough contact with the road and will be more likely to spin or lose control, especially in adverse road conditions.
How tires move
The tires must carry the vehicle along the road, but it requires so much force exerted by the vehicle to accomplish this task. The power required comes from the weight of the vehicle and the speed it is going. The tires require a lot of friction to force them to move. That amount of friction is impacted by the weight of the vehicle, which creates a coefficient of rolling friction. For an average tire, the coefficient of rolling friction or CRF is 0.015, which is multiplied by the weight of the vehicle.
The tire generates heat because of the friction with a higher heat buildup when more force is required to move the vehicle along. The amount of heat also depends on the firmness of the surface. Asphalt creates more heat on the tire while soft surfaces like sand build up less heat. On the other hand, the CRF increases on soft surfaces because it takes more power to move the tires along.
Problems with tires
Tires must be maintained to increase their life and wear. Tires that are overinflated wear more in the center of the tread while under-inflation causes them to wear along the outside of the tire. When tires are out of alignment, they wear unevenly, especially along the inside or outside. Worn areas are more susceptible to picking up sharp objects or getting holes in them when you run over sharp objects.
Tires that are badly worn may not be able to be repaired when they are flat. A certain amount of tread is required for the repair to be made. Another problem is when the steel belt breaks in a belted tire. It is no longer repairable and must be re placed.
HOW OFTEN ROTATE tires ?
It’s important to rotate tires at regular intervals, as routine tire rotation prevents uneven tire wear. A tire’s tread is where the rubber meets the road literally . When driving, the tire tread provides traction and grip. Over time, tire tread gradually begins to wear.
If you never rotate tires on your car, you will develop uneven tire tread wear. When you drive, your front tires experience more stress, as they are primarily responsible for steering and turning the car. By regularly rotating the tires, the wear is spread out evenly and extends the life of all four tires. In addition to increasing the longevity of your tires, regular tire rotations will increase fuel economy as the engine runs more efficiently on tires with even tread wear and better overall performance.
Without regular tire rotations, you risk several tire problems, worst of them being a blowout or tire failure. Tread is also part of what prevents a vehicle from hydroplaning aquaplaning , or losing traction when gravel is present on the road surface. Ensure the safety of your vehicle and the safety of your passengers with regular tire rotation, checks and complimentary tire inspections.
Find your Auto Service International for tire rotation and tire services. Our tire and auto service professionals will give your vehicles’s tires the checkup and tire rotation you need.