AUTONET TV

Under Pressure in Clovis: TPMS

Have you noticed an increase in price when you get a flat tire fixed in Clovis, or have your tires rotated? It might be the result of your TPMS, or Tire Pressure Monitoring System.

The federal government began requiring a TPMS system on 2008 model year passenger vehicles and light trucks. Some 2006 and 2007 models may have them as well. The system has a warning light that is mounted on the dashboard that will go on if one of the tires becomes severely underinflated.

Why the new requirement? Because underinflated tires are the number one cause of tire failure. Tire blowouts cause crashes and sometimes fatal accidents. Underinflated tires also need longer stopping distance and can skid, both of which also present dangers on CA roads. Many flat tires can also be prevented by proper tire inflation, and though this may seem an economic consideration, Clovis drivers who have changed a flat on the side of the road recognize that this has serious safety concerns as well.

Advances in tire technology, specifically the development of radial tires, has made it harder for Clovis drivers to recognize when a tire is underinflated. At a recommended pressure of 35 psi, a tire is seriously underinflated at 26 psi. But the tire doesn't look low on air until it reaches 20 psi. This raises concerns about vehicle owners being able to tell when their vehicles are a safety hazard on the road. Hence, the TPMS.

So, like seatbelts, the TPMS system is expected to save a lot of lives. The technology has been in use in race cars for years, and now it's being mandated for all passenger cars, SUV's, minivans and pick-ups. Besides warning drivers in the Clovis area when their tires need air, the system is required to indicate when it is malfunctioning.

This increased safety won't come without increased costs. Estimates regarding the cost of maintaining the TPMS on your vehicle run from $27 to $100. Also, there will be an added cost for tire repair. Clovis service centers have had to purchase new scanning equipment to work with TPMS sensors and other equipment to repair tires and wheels equipped with TPMS. The pros at Triple A Automotive have to be trained to use the new equipment. These costs will have to be passed on to Clovis drivers.

Further, whenever a tire is changed, Triple A Automotive will have to deal with the TPMS. Sensors will have to be removed, then re-installed and re-activated. Sometimes the act of changing a tire will damage a sensor, and it will need to be replaced. These extra services will come at an added charge to Clovis drivers.

Tire rotations will require that the TPMS be re-programmed. And whenever a vehicle's battery is disconnected, the TPMS will require re-programming as well.

The TPMS itself will require attention – it contains batteries and sensors that will wear out and need to be replaced.

So, if you've noticed an increase in the cost for vehicle care at your Clovis tire center, it may not be the economy. It could be the cost of the TPMS in newer vehicles. Before you dash off an angry letter to Congress, however, stop and consider what you're paying for. If predictions are correct, the TPMS will save lives, and that will be a benefit to all of us.

Of course, no warning system will save lives in Clovis if drivers don't pay attention to it. And remember that the warning doesn't come on until the tire is severely under inflated; you still should check your tire pressure at least once a month. You can prevent accidents and potentially save lives without a warning system by keeping their tires properly inflated.

Safe driving!

Triple A Automotive
972 Barstow Suite B
Clovis, CA 93612
(559) 299-9300
http://www.tripleaautomotive.com

Go Big or Go Home: Upsize Your Wheels at Triple A Automotive

A lot of us Clovis drivers like our vehicles to reflect our personalities. We're picky about color and body style. We'll customize anything from floor mats to window tints to license plates. One popular way for CA motorists to customize a vehicle is to get new wheels.

Wheels come in thousands of designs. Custom wheels can add personality, style or sass to a vehicle. Many of these customizations involve getting a bigger wheel.

Fifteen or 16-inch wheels used to be the factory standard, but today, because a lot of Clovis drivers like the look of larger wheels, many vehicles are available with 17 or 18-inch wheels. Optional wheel packages of 20 inches or more are also available in Clovis.

If you want to upsize the wheels on your current vehicle, however, you should know it's not a do-it-yourself project. There are factors involved in ensuring your wheel change doesn't jeopardize the safety of your vehicle.

First of all, you need to understand rolling diameter. The rolling diameter is the overall height of a tire. If you increase the rolling diameter of your tires when you upsize your wheels, you may have to modify your suspension to make sure the larger tires fit in the space and don't rub in turns or over bumps. If that's more work than you're willing to do or pay for, then you need to maintain rolling diameter when you change your wheels.

It's not as hard as it sounds. Imagine a doughnut. That doughnut represents rolling diameter, so you can't make the doughnut bigger. However, you can increase the size of the doughnut hole. That gives you a bigger wheel. Tires with reduced sidewall on larger wheels will preserve your rolling diameter.

Rolling diameter is important because your wheels and tires still need to fit inside the wheel well. Also, your speedometer, odometer and anti-lock brakes are all programmed to work with a specific rolling diameter. You'll throw off the readings on your speedometer and odometer if you change your rolling diameter. And for your anti-lock brakes to work properly, your rolling diameter has to be within 3% of factory recommendations. While some Clovis drivers who upsize may not be concerned about meter readings, throwing off the brake system is a serious safety hazard.

Further, many vehicles in Clovis are now equipped with electronically controlled suspensions. Changing the rolling diameter will negatively affect this system as well, which can lead to a less smooth ride and lower handling performance as well as safety concerns.

Your friendly and knowledgeable Triple A Automotive tire professional may be able to reprogram your vehicle's computer to adjust for a larger (or smaller) rolling diameter.

So to maintain rolling diameter, you'll need tires with a shorter sidewall. These tires will be designed to give the sidewalls the strength they need to maintain ride quality. Consider that doughnut again. As the wheel (the doughnut hole) gets bigger, the sidewall of the tire (the width of remaining doughnut) gets shorter. That means the tire holds less air. The sidewalls have to be made stiffer to compensate for the decreased air capacity.

To improve their strength, the shorter tires will also be slightly wider than your previous tires. But this means you'll have a larger contact patch, or, in other words, a larger area of tire making contact with the road. This can actually increase your handling performance and decrease braking distances. Many CA auto buffs customize their wheels just for this reason—they want the improved performance rather than looks or style. If you drive a truck or an SUV around Clovis, you might be interested in the extra control an upsized wheel can provide.

Now, that larger contact patch still has to fit inside your wheel well without rubbing when cornering or when bouncing over bumps or potholes on Clovis roads. This is termed fitment, and you may need a few adjustments so your new wheels will fit properly. You may need spacers so that your brakes will fit inside the new wheels, as well.

Triple A Automotive tire professionals are experts at mounting, adjusting and customizing wheels. They can give you a lot of good auto advice about wheels and tires and how they affect driving performance and car care. They can help you select wheels and tires that will suit your driving needs and habits.

For example, if you drive off-road around Clovis, you should consider a higher profile tire. This type of tire will protect your rims from damage while you're bouncing over rocks. Or, if you tow a trailer or haul heavy loads around CA, you'll want a tire with a load rating equal to your demands. Your friendly and knowledgeable Triple A Automotive tire professional can help you with these types of concerns.

Once you've got your new wheels, have your service advisor at Triple A Automotive see if you need an alignment. You don't want those new wheels and your higher performance compromised by poor alignment. Get the most out of your investment by getting the work done right at Triple A Automotive in Clovis.

Last but not least, remember tire pressure. With larger wheels, your new tires will hold less air and they'll need slightly higher pressure. You'll need to stay on top of preventive maintenance and keep them properly inflated. Be sure to check their pressure at least once a week. If you don't keep your tires at their correct pressure, they will wear out really fast. It will also affect your braking and handling performance.

So smile and show off your vehicle around CA. Make it all yours. Bumper stickers, vanity license plates, custom wheels — strut your stuff!

Triple A Automotive
972 Barstow Suite B
Clovis, CA 93612
(559) 299-9300
http://www.tripleaautomotive.com

Bouncy Bouncy ? Are My Shocks Bad?

When Clovis drivers think about preventive maintenance, what usually comes to mind is oil, fluids and brakes. We don't generally think about our shocks or struts, but these auto parts keep our tires on the road.

Clovis drivers don't think about shocks as often as oil changes because shocks and struts last a long time and wear out slowly. They don't need to be checked as often as our brake pads or air filters. By the time your shocks have 50,000 miles (80,000 kilometers) on them, their performance will have noticeable degraded. If you want to restore the handling and ride designed for your vehicle, try replacing your shocks and struts.

Of course, if you drive off-road around Clovis, carry heavy loads, tow a trailer or put in a lot of mileage on poor driving surfaces, your shocks or struts will wear out more quickly. You'll need to replace them more often or upgrade to better shocks.

Your suspension system uses springs and shocks to absorb the “shocks” and vibrations of driving over road surfaces. Springs support the vehicle's weight, suspending it above the axles so the body of the vehicle is protected from most of the bumps on the road. Shocks control the bounciness of the springs by moderating rebound. They also push your tires down onto the road's surface, maximizing traction. Without shocks, your wheels would bounce over bumps and lift against curbs and corners. Shocks are important to the safe handling of your vehicle as well as a comfortable ride. Struts are a combination shock and spring in one unit.

Worn shocks result in lowered vehicle handling performance. If your vehicle “squirms” around corners or gets “floaty” over bumps, then you need to check your shocks. If the rear end of your vehicle squats while accelerating, the front end dips while braking, or one corner sags, you probably need new shocks.

If you're unsure whether you need new shocks, or if you're considering upgrading to a higher quality shock, then consult your friendly and knowledgeable Triple A Automotive service advisor. He or she can give you advice on the condition of your shocks and how to match your driving needs to the quality of your shocks.

At Triple A Automotive we know good vehicle care is essential to the safety, performance and efficiency of your vehicle. It can improve the comfort of your ride as well.

Triple A Automotive
972 Barstow Suite B
Clovis, CA 93612
(559) 299-9300
http://www.tripleaautomotive.com

The Triple A Automotive Guide to Tire Specs

You know you need new tires, but you're not sure what type. You look at a tire to get the size: 225, 50, R, 16, 92, H. All the way to the Clovis service center you keep repeating it over and over. You even say it over in your mind while waiting in line. Then you get to the counter and the manager asks what size you need. Then your mind goes blank.

Tire size can be confusing for many Clovis drivers. There's so much on the side of the tire, and it's hard to keep straight.

Even though there's a lot on a tire - if you know what it all means, it's actually more helpful than confusing for Clovis tire shoppers. Let's start with the size number.

For example, let's say a tire reads: 225 50 R 16 92 H. The 225 part is the width of the tire in millimeters - the width between the sidewalls of an inflated tire with no load. The 50 is the aspect ratio - the ratio of the sidewall height to the tread width. Off-road tires will have a higher number and high performance tires will have a lower number.

The R signifies it's a radial tire. And 16 is the rim or wheel size in inches.

The 92 is the load rating index - it's the load carrying capacity of a tire. The higher the number, the more it can safely carry. Your empty vehicle can be safe with a lower number, but you'll need a higher rating if you routinely haul heavy loads around Clovis. The next letter is the speed rating. Not all tires sold in Clovis are speed rated. The ratings generally follow the alphabet: the further up the alphabet, the higher the speed rating - with the exception of H - it comes between U and V (don't ask why).

There's a lot of fine print that most Clovis area drivers probably need a magnifying glass to read. But there are a couple of other large print items of interest. One is the tread type: highway, mud and snow, all season, severe snow, etc.

And then there are the Uniform Tire Quality Grading System markings. The first is a tread wear index. 100 is the base line - a lower number is poorer and a higher number is better. All things being equal, a tire rated 200 would wear twice as long, on a government test track, than one rated at 100. These wear grades are only valid within the manufacturers product line - you can't compare with others. And it's important to note that a lower rating might be just what you want - a high performance, sticky tire has a softer rubber compound and won't wear as long, but boy, will it take those corners on twisting CA roads.

The next is a traction grade. This measures the tire's ability to stop on wet pavement in government tests. A - the best, B - intermediate, C - acceptable.

Temperature grade measures a tire's resistance to heat buildup in government tests. A, B and C - from best to acceptable.

It's safe for Clovis drivers to go with the vehicle manufacturers original equipment recommendations that came on your car. But if you want to make adjustments, you'll now be better equipped to communicate with your friendly and knowledgeable Triple A Automotive tire professional.

Triple A Automotive
972 Barstow Suite B
Clovis, CA 93612
(559) 299-9300
http://www.tripleaautomotive.com