The Truth About Over-Inflating Your Tires

Many people often wonder what, if any, damage can be done to their vehicle if their tires are overinflated. It's an easy mistake to make if the air gauge is even the slightest bit misleading while you're airing up your tires. However, some car owners might do this on purpose and be under the impression and it's beneficial to their vehicle. What is fact and what is fiction? Our blog will hit on the common misconceptions of over-inflating your tires.


(photo source: Getty images)

We'll start with the bottom line first: overinflation is detrimental to your tires and can be dangerous. You should always adhere to the manufacturer's suggested tire pressure. This specific tire pressure has been predetermined by the car's manufacturer by a series of tests and has gone through rigorous analyzation for each model. It takes into account many factors such as tire wear and tread life, driving comfort and handling, and fuel efficiency.


On the inside of the driver's door is a label that indicates the recommended psi in all four tires for optimum performance. In addition, the sidewall of the tire shows the maximum pressure for the tires that shouldn't be exceeded.


Exceeding the optimum tire pressure is not recommended for many reasons.

  1. Tires will wear out prematurely. Overinflated tires round out on the tread section and cause the center to wear down significantly faster than the outer edges. This could cause them to last only half as long as they typically would.

  2. Overinflation can cause loss of traction. Even in normal driving conditions, you are more susceptible to losing traction, spinning out or crashing. Therefore, it is even more noticeable if your tires are overinflated in winter weather.

  3. Overinflation creates a harsher ride. Overinflated tires create a rougher ride, so you are more likely to feel every dip and bump in the road.


Something to keep in mind is that air pressure will vary with temperature, so expect to lose 1-2 psi for every 10-degree drop in temperature. To get the most accurate reading, leave your vehicle parked for at least three hours prior to adding air. Pulling into a gas station and immediately checking/filling up the air could alter the reading. The general rule of thumb is to subtract 2-3 psi from the reading due to the tires being warm.


Please follow all manufacturer guidelines of your vehicle especially when it comes to your tires. The maximum psi is set to insure your safety on the road and the longevity of your tires and neglecting to follow their recommendation can be very risky.


If it's time for your tires to to be rotated, aligned, or aired up, come see us for a quick check-up! Our technicians are happy to make sure your wheels are rolling smoothly. You can reserve an appointment time or drop in to see us!


MINI of San Antonio is a new and used car dealership that provides vehicles to customers all over Texas. We have customers come in from Canyon Lake, New Braunfels, Austin, Kirby, Allen, Boerne and many more cities. Let us know if you have any questions.


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