Dempsey's Tire Center

Driver & Tire Safety

Tire Pressure Important

by on Jul.23, 2009, under Driver & Tire Safety

Making Sure You Have Correct Tire Pressure

Making Sure You Have Correct Tire Pressure

Tire Pressure and Your Gas Mileage
Keeping Your Tires Filled Saves Gas and Money.
By Matthew Wright,

Did you know that how much air you have in your tires can have a direct affect on your gas mileage? It’s true. Here’s why:

Let’s say your tires are supposed to be filled to 35 psi. If they are filled correctly, six square inches of your tire are touching the road, just the way your tires were designed. But let some air out, and now the pressure is only 30 psi. Since your tire is like a balloon, the more air you have on the inside, the rounder and more firm your tire becomes. If you had six square inches touching the road at 35 psi, the flatter 30 psi tire will have eight square inches touching at once, making it harder for your engine to get things rolling from a dead stop. Here’s another way to think of it. Say your dog is going to the vet, and she’s not so interested in moving toward the car, so you pull. You start out pulling her with all four of her feet on the ground. We’ll call this four square inches touching. But then she plops her rear end on the ground. You’re now pulling 12 square inches, and boy is she harder to drag toward the car.

Unfortunately you can’t dangle a piece of salami in front of your car to make it go, so you’re left using the engine, which uses more gas the harder it pulls. Filling your tires to the correct pressure will make it easier on the engine, and that means you’ll be using less gas. It can make a difference of a three or four miles per gallon. That’s at least 36 more miles to the average tank of gas. At one tank of gas per week, you could be adding 1,872 free miles in a year! That’s savings, and that’s Automotive Empowerment for no money at all.

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Tire Safety Tips

by on Jul.22, 2009, under Driver & Tire Safety

Tire safety tips
Checking tires is quick and easy – and vital to safety
By Aaron Gold,

Tires are one of the most important — and oft-overlooked — components of our cars. Automakers can spend all the time and money they want on engineering a car for handling are comfort, but in the end, the tires are the only thing that attach our car to the road. A problem with a tire affects ride comfort, handling and safety. Here are some simple tire safety tips to help keep you and your car’s occupants safe.

Check your tire pressure regularly. Tires tend to lose air over time. Buy a digital tire gauge and check your tires once a month and before a long trip. Proper inflation pressures can be found in your owner’s manual or on a sticker on the car (usually on the driver’s doorjamb or fuel-filler lid — see photo.) Remember to check tire pressure only after the car has been sitting for several hour in order to ensure that the tires are cold — the friction of driving heats the tires and increases pressure, which can hide an under-inflated tire.

Address under-inflated tires immediately. An under-inflated tire has more rolling resistance which increases fuel consumption. It also creates more heat, which can lead to tire failure.

Don’t forget the spare. Getting a flat tire and discovering that your spare is flat too is a miserable experience. Inspect your spare as you would your other tires. If you have a compact spare, the inflation pressure will usually be written on the tire. If your car comes with a compressor and/or flat repair kit in lieu of a spare, check their operation regularly.

Check for tread depth. Check tread depth by placing the edge of a penny upside-down into the grooves of the tire’s tread. (Photo here.) If you can see all of Lincoln’s head, it’s time for a new set of tires. Never buy a single tire — it’s best to replace all four tires at once, but at the very least they should be bought as axle pairs (both fronts or both rears). Rotating your tires every 5,000 to 7,000 miles will help ensure that all four tires wear at the same rate.

Check for even wear. When you check tread depth, check both the inside and outside edge of the tires. Uneven tire wear is usually a sign that your car is out of alignment. Proper alignment optimizes handling and helps prevent premature tire wear.

Look for tire damage. When you check pressure, inspect the sides of the tires for nicks, bulges, cracks and cuts. Such damage often cannot be repaired and will require replacement of the tire.

Stay balanced. If your car develops a shimmy (a back-and-forth vibration, usually felt through the steering wheel) at a certain speed, it’s possible that one of your tires has lost its balance weight. Having your tires re-balanced is a fairly inexpensive procedure.

Buy the right tire for the job. Most cars come with all-season tires, the tire equivalent of a jack-of-all-trades. If you live in the rust belt, consider a set of dedicated snow tires for the winter; they do wonders for safety. If you live where it’s always warm and dry, “summer” performance tires can vastly improve your car’s handling.

And most importantly:

Never hesitate to replace a worn or damaged tire. Tires are not cheap, but they are vital to the safety of you and your car’s occupants. Remember, the tires are the only thing that connect your car to the road. Advanced safety features such as antilock brakes and electronic stability control can’t do their life-saving jobs without four good tires. Take care of your tires — because whether you know it or not, you’re counting on them to take care of you. — Aaron Gold

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Old Tires Can Be Hazardous

by on Jul.22, 2009, under Driver & Tire Safety

As seen form the following special report video by ABC, having old tires on your vehicle can be extremely hazardous.

That’s never a problem at Dempsey’s Tire Center. Your safety is our concern.

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Are Winter Tires Worth It?

by on Jul.22, 2009, under Driver & Tire Safety

Many of us now use All-Season tires now year round. However, if you live somewhere that gets a little more snow, this video may be of interest to you. It shows that there is a definite performance difference between the All-season tires and Winter tires

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