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Bridgestone Tires
All About Tires

DO YOU NEED NEW TIRES?

You need to be aware of three things when deciding if you need new tires: tread wear, exposure to the elements and tire age.

TREAD WEAR
Who says a penny doesn't buy you anything? With this easy test, a penny can buy you peace of mind when it comes to your tires and safety. Place a penny head first into several tread grooves across the tire. If you always see the top of Lincoln's head, your treads are shallow and worn. If this is the case, your tires need to be replaced. If part of Lincoln's head is always covered by the tread, you have more than 2/32 of an inch of tread depth remaining. This means you probably don't need new tires.

WHY WORRY ABOUT TREAD WEAR?
The most important reason to worry about tread wear is safety. When your tire treads are worn, your car may respond poorly in adverse weather conditions like rain and snow. With good treads your car will grip the road better. Also, having insufficient tread is considered illegal in many states. And finally, worn treads can make other parts of your car wear prematurely.

EXPOSURE TO THE ELEMENTS
Exposure to heat and the sun's ultraviolet rays may cause structural changes to your tires. These changes are not usually a concern in moderate climates.

TIRE AGE
How old are your tires? Regardless of tread wear, vehicle manufacturers generally recommend you replace your tires at five years. Most tire manufacturers recommend you replace your tires at 5 years as well. Check the manufacturer's recommendations on your specific tires.

I NEED NEW TIRES
When it's time to change your tires, Courtesy Tire wants to make purchasing a new set as simple as possible. We have the best selection of quality tires to fit your vehicle, your budget and your driving style. From economy to ultra high performance tires-in the size you need from brands you trust, including our well-known Bridgestone and Firestone brands-you can Find What You Need Right Here.

AIR PRESSURE

WHY CORRECT AIR PRESSURE MATTERS
Keeping the correct air pressure in your tires helps your tires last longer, helps your car handle better and safer, and helps you save money on fuel.

CHECK AIR PRESSURE REGULARLY
Most people forget about their tires until something goes wrong. The truth is, tires lose pressure daily. In cool weather, a tire will typically lose one or two pounds of air per month. In warm weather, tires lose even more air. That's why it's recommended that you check air pressure every other time you stop to fill up your gas tank. Keep in mind that many vehicles have different tire pressures on the front and rear axle. And don't forget to check the pressure in your spare tire.

WHAT IS THE CORRECT PRESSURE
The first place to look for the correct air pressure for your specific tires is your vehicle owner's manual. Correct air pressure should also be listed on the tire placard attached to the vehicle door edge, doorpost, glove box door or fuel door. You may use the tool above to view the manufacturer recommended inflations for standard sized tires on your vehicle.

LOAD INDEX

The load index indicates the load-carrying capacity of a tire. In other words, it tells you how much weight your tire can support. For example, if a tire has a load index of 92, it can support 1,389 pounds at maximum air pressure. Multiply that by four tires (4 x 1,389 = 5,556 pounds) to get your car's maximum load-carrying capacity. Never install tires with a lower load carrying capacity than the tires originally installed on your car in the factory.The load index rating will be listed on the side of the tire in conjunction with the speed rating and will be expressed as something like 91H.

SPEED RATING

The speed rating of a tire indicates the speed category (or range of speeds) at which the tire can carry a load under specified service conditions. The speed rating system used today was developed in Europe in response to the need to control the safe performance of tires at standardized speeds. A letter from A to Z symbolizes a tire's certified speed rating, ranging from 5 km/h (3mph) to above 300 km/h (186 mph). This rating system describes the top speed for which a tire is certified. It does not indicate the total performance capability of a tire.

When this speed rating system was originally developed, the Unlimited V category of over 210 km/h (130 mph) was the top speed rating a tire could achieve.

As manufacturers made more tires that did not fit this category, it was necessary to better regulate performance at standardized speeds to ensure safety. The Limited V category of 250 km/h (149 mph) was then created, and the Z speed rating was added as the top speed rating that a tire could achieve. W and Y limited speed symbols have been added as higher speed categories.

Always consult the manufacturer for the maximum speed of Unlimited Z tires. Speed rating is identified as a part of the tire's sizing or service description.

In the latest attempt to standardize tire designations, all ratings except Unlimited ZR incorporate the speed symbol and load index as the tire's service description.

TIRE PRESSURE MONITORING SYSTEM (TPMS)

TPMS, Tire Pressure Monitoring System, is an electronic system that alerts you with a dashboard indicator light when your car's tire pressure falls to the point of needing inflation.

WHY IS TPMS NECCESSARY
To help drivers recognize the importance of tire pressure safety and maintenance, Congress passed the TREAD act, which requires most vehicles made in 2006-07 and ALL made thereafter to be TPMS equipped.

HOW DOES TPMS WORK
To help you make informed decisions about TPMS, it's important to know how each system-Direct and Indirect-works. Direct uses a sensor located in the tire assembly that transmits data to your vehicle's computer system. It measures the tire's pressure and notifies the driver when pressure drops 25 percent or more below the manufacturer's recommended level. Indirect TPMS uses the Antilock Braking System (ABS) to gauge tire pressure by measuring the difference in diameter of each tire. Our Firestone Complete Auto Care expert technicians can tell you which system your vehicle uses.

WHAT ARE THE BENEFITS OF TPMS?
TPMS notifies you when your vehicle's tire pressure is low or is going flat. By helping you maintain proper tire pressure, TPMS can increase your safety on the road by improving your vehicle's handling, decreasing tire wear, reducing braking distance and bettering fuel economy.

IS YOUR VEHICLE EQUIPPED WITH TPMS?
Your vehicle has TPMS if the "low tire pressure" warning light appears on your dash when the key is turned to the "on" position.

HOW CAN OUR TECHNICIANS HELP?
If your vehicle's TPMS warning indicator light comes on, there is a tire pressure problem. Stop into Courtesy Tire and our technicians will take care of your needs. They'll check your vehicle's tire pressure and perform a systems test on all of your tire sensors to diagnose the problem. Once our technicians address your vehicle's tire needs, they'll then suggest the proper maintenance to get you back on the road.

WHY DOES TIRE MAINTENANCE WITH DIRECT TPMS COST MORE?
Direct TPMS equipped tires cost slightly more to maintain than non-equipped tires because proper care requires extra parts and labor. The valve service kit, which includes the valve core, cap, nut and o-ring (seal), must always be replaced when a tire is dismounted for service or replacement. The service kit costs $5-$10 per wheel on most vehicles. A special TPMS tool and additional time are also needed to check and reset the sensor system. In the event pressure sensors need to be replaced, the cost ranges from $50-$250 each depending on vehicle type.

PURCHASING AND MOUNTING TIRES

Generally, new tires provide increased resistance to hydroplaning due to their full tread depth. With new tires on the rear, an oversteer skidding condition may be more easily avoided.

Whether your vehicle is front-, rear-, or all-wheel drive, if your rear tires lose traction because of hydroplaning on a wet road, an oversteer skidding condition may result and lead to loss of control, particularly in a turn.

Additional or alternate recommendations may apply for some vehicles. Always refer to and follow the vehicle manufacturer's tire replacement and tire application recommendations; consult your vehicle owner's manual and tire information placard.

Driving your vehicle with an improper mix of tires is dangerous. Your vehicle's handling characteristics can be seriously affected. You could have an accident resulting in serious personal injury or death. Consult your vehicle owner's manual, tire information placard, and a qualified service professional for proper tire replacement.

Penny Test

Tire Wear Patterns

Weather Checking

Tire Placard

TPMS

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