Tire Pressure Basics

Having the correct pressure in your tires is very important! Make sure that you have the correct tire pressure in all five tires. (Don’t forget the spare tire) We suggest going by what your vehicle manufacturer recommends, which should be listed on the side of the driver’s door, on the glove compartment door, and/or in the owner’s manual.

What happen with over inflating

Over inflating creates a harder ride because the tires are rigid and stiff causing the tires contact to the road to be reduced. This also causes uneven tread wear usually happening in the center of the tire. Plus due to the rigidity of an overinflated tire it can be more easily damaged by everyday road hazards such as potholes and bumpy roads.

What happen with under inflating

Underinflated tires do not hold their shape and are flatter to the ground. Therefore, more of the tire comes in contact with the road, causing the shoulders of the tire to wear prematurely. Underinflated tires are more flexible when they roll, leading to increased rolling resistance and therefore a decrease in fuel economy. 

Temperature and Tire Pressure

Tire pressure does change with temperature, tire pressure will go up approximately one pound for every 10 degrees Fahrenheit.  If your tire pressure was 32PSI at 30 degrees and it’s now 70 degrees your tire pressure could be up to 36PSI.

Under some conditions that increase in pressure is enough to blow the tire! If nothing else, a tire that’s overinflated will wear prematurely and will cause the car to handle and brake poorly. Also your electronic tire pressure monitoring system in your car won’t help you in over inflation. The warning light will only come on when a tire’s air pressure is too low, not too high.

When putting air in your tires try to do it at the beginning of your drive. This way the tires are cool, once you start driving it heats up the tires from the friction of the road which can cause the tire pressure to be higher than it truly is, as stated above high temperatures means higher PSI.


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