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Up to 25% Off Online Orders of Select Parts & Accessories. Enter Promo Code MMJ25 in Cart.

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Receive Up to 25% Off Your Online Purchase Instantly

When items are added to the cart, the following discount structure will apply: 15% Off $50-$74.99, 20% Off $75-$99.99 and 25% Off $100 or More. Not valid in combination with any other discounts, promotions or items already on sale. Not valid on gift cards, special orders, service, installed merchandise, commercial or fleet purchases. Excludes the following categories: Tires, Wheels, Oil, Antifreeze, Refrigerant, Truck Boxes, AGM Batteries and MAP Priced BRANDS: Powerstop, Razor, Traxxas, Superchips, Hypertech, Edge, Bully Dog, Diablo, Edelbrock, Holley, NOS, Proform, Specialty Auto, Autometer, Accel, K&N, Kenwood, Pioneer, Sony, Thule, Thule Karrite, JVC, Flowmaster, Hurst, B&am;M, MSD, WeatherTech, Spectre, AEM, Airaid, SPE, Bolt Lock, Aeromotive, Absorber, Moog, Wagner, Champion, Felpro, Sea Foam and BBK Performance. Valid online until 11:59 pm EST on 1/31/18.

Receive 10% Off Wagner branded brake parts with your online purchase. Use promotional code: WAGNER10.

Receive 10% Off Select Champion branded products with your online purchase. Use promotional code: CHAMP10.

Receive 10% Off Select FelPro branded products with your online purchase. Use promotional code: FELPRO10.

Offers not valid in combination with any other discounts, promotions or items already on sale. Not valid on gift cards, special orders, installed service merchandise, commercial or fleet purchases. Those products that are included in these offers will be displayed in product search results and product detail pages. Excludes select products, brands and MAP priced items. For full category inclusions and disclaimers, see details here. Valid online until 11:59 PM EST on 1/31/18.

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Tire Pressure Monitoring System Truths



Tire Pressure Monitoring
System Truths

It can be tough to tell if the air in a tire is too low or too high just by looking at it. Luckily for us, most newer cars have a Tire Pressure Monitoring System (TPMS) that continuously monitors the pressure in your tires through sensors located in the tires (direct system) or the use of wheel speed and other vehicle sensors (indirect system). The information collected by the sensors is transmitted to an on-board processor that interprets the sensor signals and warns the driver when tire pressure is below the minimum acceptable level by illuminating a warning lamp.

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Most vehicles use a direct system where a tire pressure sensor has been placed in each tire, which is linked to your vehicle’s onboard computer to directly measure air pressure.

A small number of vehicles use an indirect tire pressure monitoring system that monitors the relative speed and rotation of the vehicle’s wheels and alerts you if one wheel is significantly out of sync with the others.

Underinflated tires can take a toll on your wallet and your safety by affecting your gas mileage and shortening tire life due to uneven wear. Even more importantly, under-inflation can stress a tire to the point of failure, putting you in jeopardy of having a blowout on the road.

There are many things that can come into play and affect tire pressure, including temperature changes, tire punctures or other damage. Tire pressure can drop about 1 psi (pounds per square inch) for every 10 degrees and tires lose about 1.5 psi per month as air escapes from the tire naturally.

On cold mornings, the TPMS light lamp may light up for a short period of time and then turn off. This usually is caused by slightly low tire pressure that falls below the warning threshold overnight, but returns to an acceptable level as the tires heat up. In the summer, tires can overinflate, also triggering your TPMS light. If you notice this happening, bring your car into Pep Boys for a free tire pressure check.

TPMS is required by The National Highway Traffic Safety Administration on all vehicles produced after September 2007. Some earlier models may also come equipped with TPMS. Check your owner’s manual to be sure. According to the National Highway Traffic Safety Administration, TPMS is estimated to reduce the number of annual motor vehicle crash fatalities by about 120 and the annual number of injuries due to motor vehicle crashes by about 8,500, when all passenger vehicles are equipped with TPMS.

If you see your tire pressure light on, stop by your local Pep Boys for a free tire pressure check. You can find your recommended tire pressure in your owner’s manual or in the doorjamb of your driver’s side door.

Remember, TPMS is not a cure-all or a replacement for proper air pressure maintenance, it’s important to check your air pressure regularly. Vehicle aging and other factors can impact the system readings. Your car will handle better, save you gas, and you’ll be safer on the road.

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