4 Essential Things to Know About Your Car’s Tire Pressure Gauge

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The tire pressure gauge is a sensor that reads the tire pressure of all four tires of a vehicle. Modern vehicles have a Tire Pressure Monitoring System (TPMS) built in. Starting in 2007, the TPMS has to report an under-inflation of 25 percent in any combination of all four tires.

Tire Pressure Light

The Low Tire Pressure Light is illuminated once the TPMS reads a pressure lower than 25 percent of the manufacturer’s recommended pressure. The light is indicated by an exclamation point surrounding by a “U” shape. If this light comes on in your vehicle, it means your tire pressure is low. You should find the nearest gas station to fill up your tires.

What to Do If the Tire Pressure Light Comes On

If the TPMS Light comes on, check the pressure on all four tires. It may be one or a couple tires that need air. It is a good habit to check all tires to make sure they are filled to the manufacturer’s standards. Furthermore, if the gas station gauge is reading the tire pressure is normal, you may have a problem with your TPMS.

Indirect vs. Direct TPMS

The indirect TPMS uses the antilock braking system’s wheel speed sensor to determine if one tire is rotating faster than the others. Since an underinflated tire has a smaller circumference, it has to roll faster to keep up with the tires that are inflated normally. The margin of error of the indirect system is large. The direct TPMS measures the tire’s actual pressure and are accurate within one psi. These gauges are mounted to the tire valve or the wheel. Once it measures the pressure it sends the signal to the vehicle’s computer.

Dangers of Under-Inflated Tires

Under-inflated tires are the leading cause of tire failure. Driving on under-inflated tires can cause blowouts, tread separation, and premature wear. Blowouts can put the vehicle, passengers, and others on the road in harm’s way because of the debris and potential to lose control of the vehicle. According to the National Highway Traffic Safety Administration, thousands of injuries can be prevented every year if people would inflate their tires to the right pressure.

The tire pressure gauge will light up if your tires are under-inflated. Driving on under-inflated tires is dangerous, so it is important to fill them up with air right away.


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Arturo

25 years of experience
42 reviews
Arturo
25 years of experience
Volkswagen Tiguan - Brake Pads Replacement (Rear) - La Jolla, California
Arturo was efficient and extremely professional. I'll refer him to friends and family and call him for any issues related to my car. I am very happy with the service!
Kia Forte - Brake Pads Replacement (Front) - San Diego, California
ARTURO is great! very professional , fast, replaced my front brake pads and oil an filter change. everything now works and works well. Brakes have much improved stopping power and engine is smooth and quiet.Arturo is also kind and thoughtful. "Your mechanic" is very fortunate to have Arturo Lopez represent your company. I enthusiastically recommend him and "Your mechanic> as a fine operation Best regards to the Team Peter Marto

Travis

11 years of experience
312 reviews
Travis
11 years of experience
Ford Explorer Sport Trac - Brake Pads Replacement (Rear) - Minneapolis, Minnesota
Travis is great! This is the second time he has come and serviced our truck. I recommend Travis for any service ned you may have!
Subaru Forester - Brake Pads Replacement (Front, Rear) - Rosemount, Minnesota
Thank you Travis for your fast, easy, honest work on my vehicle today!! The first thing you did upon arrival to my home was find me a discount coupon for $50 off my service estimate. You did only what needed to be done in record time. You not only saved me lots of money, but did things in a profession manner. I've been looking for an honest auto mechanic for my whole life and would love for you to be it!! Thank you, thank you, thank you!! You're the best!!!

Scott

32 years of experience
346 reviews
Scott
32 years of experience
Hyundai Sonata - Brake Pads Replacement (Front, Rear) - Denver, Colorado
Arrived on time and worked quickly. Gave me detailed information on his completed work and the details of my car. Answered all of my questions thoroughly.
Lexus IS250 - Brake Pads Replacement (Rear) - Denver, Colorado
Always on time, speedy, professional, and pleasant to interact with. The work is always consistent and we'll done. I can't reccomend Scott highly enough!

Nicholas

9 years of experience
251 reviews
Nicholas
9 years of experience
Lexus GX470 - Brake Pads Replacement (Rear) - Clayton, North Carolina
Nicholas texted me 30 minutes prior to arrival. Showed up on time as scheduled. He confirmed the work that I requested be performed. He completed the work, performed the road tested, and delivered my keys along with recommendations of other work that might be in my best interest. Was very pleasant, professional, and cleaned up after he was done. I was so impressed with the service he performed and the speed at which the services were completed. I have already scheduled a future service with Nicholas and will schedule any and all future repairs with him if he is available.

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