AUTONET TV

Go Big or Go Home: Upsize Your Wheels at TJ's Auto Center Inc.

A lot of us Rockford 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 Illinois 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 Rockford 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 Rockford.

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 Rockford drivers who upsize may not be concerned about meter readings, throwing off the brake system is a serious safety hazard.

Further, many vehicles in Rockford 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 TJ's Auto Center Inc. 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 Illinois 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 Rockford, 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 Rockford 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.

TJ's Auto Center Inc. 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 Rockford, 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 Illinois, you'll want a tire with a load rating equal to your demands. Your friendly and knowledgeable TJ's Auto Center Inc. tire professional can help you with these types of concerns.

Once you've got your new wheels, have your service advisor at TJ's Auto Center Inc. 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 TJ's Auto Center Inc. in Rockford.

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 Illinois. Make it all yours. Bumper stickers, vanity license plates, custom wheels — strut your stuff!

TJ's Auto Center Inc.
3427 E. State St.
Rockford, Illinois 61108
815-399-2886

It?s About Time: Following Service Intervals at TJ's Auto Center

There are a lot of things in life that Rockford residents have to do on a regular basis. We wash dishes every day, do our laundry and mow our lawns every week, and pay the bills every month. We should go to our Rockford dentist twice a year and see our doctor for a check-up once a year. When we don’t stay on schedule with these routines, it can lead to embarrassing, painful or expensive consequences.

Scheduled maintenance is also part of good car care. Rockford drivers should take their sedans in regularly for a good check-up. But many Rockford, IL folks struggle to remember, or actually even ignore, this auto advice. When it comes to our cars, we’re more likely to listen to “If it ain’t broke, don’t fix it” than “An ounce of prevention is worth a pound of cure.” Yet it is the second adage that is the more applicable one.

Regular brushing treatments prevent cavities. Filling a cavity prevents a more painful and more expensive root canal. In the same way, replacing coolant/antifreeze, for example, vehicle can prevent cooling system leaks. Repairing leaks can prevent engine failure. So why do we procrastinate?

One reason might be that “ignorance is bliss.” We can see dirty dishes on the counter and how long our grass is getting; we can smell how dirty our clothes are; but we don’t notice how dirty our transmission fluid is getting. However, trouble in our sedans is like trouble in our bodies—ignorance is not bliss. High blood pressure can lead to heart damage, and inadequate coolant can lead to engine damage. However, we can’t know about either one unless we take the time for a diagnostic check-up at TJ's Auto Center in Rockford.

Another reason us Rockford drivers put off scheduled maintenance for our vehicles may be that we are simply intimidated by automotive care. After all, we understand how to take care of clothing, dishes, lawns, etc. Most of us have a basic working knowledge of our bodies and feel qualified to explain how we feel. But our vehicles? What exactly does routine, preventive maintenance involve? Most Rockford auto owners don’t know.

Of course, our sedans come with owner’s manuals that do a good job of explaining what routine maintenance is and how often our vehicles need it. But how many Rockford auto owners actually read them?

The good news is that all Rockford drivers have to do is remember to take our vehicles to a reputable, service center like TJ's Auto Center in Rockford. Like a good doctor, your Friendly and professional TJ's Auto Center tech will be able to tell you what maintenance and service your car needs and when. The service center can track your car’s maintenance records—just as a doctor maintains your health records—so that your vehicle is getting the service it needs in a timely manner.

Here are some guidelines to help Rockford auto owners understand the basics of preventive maintenance: Fluids. If it’s a liquid, it has to be replaced regularly. Your owner’s manual will tell you how often. Liquids include oil, transmission fluid, coolant, power steering fluid, brake fluid and differential fluid. There may be others. Check with your owner’s manual or your service center for specifics on your vehicle.

Tires. They need routine, scheduled care to wear well. Primarily, they need air. But they also need to be rotated, balanced and aligned.

Brakes. Brakes and shock absorbers wear out. There’s no way to avoid it. Worn parts need to be replaced.

Fuel. Obviously your sedan needs gas on a regular basis. But the fuel system also needs periodic maintenance. Air filters and fuel filters get dirty and need to be replaced. The fuel system needs to be kept clean.

These are the basics of car maintenance. Of course, there are other parts of your car that need to be inspected regularly, such as the battery, exhaust system, belts, etc. These parts have longer life cycles than your fluids, tires, brakes and filters, and so don’t need to be replaced as often.

If you are taking your sedan in for the basics, then your Rockford service center will let you know when it is time for an inspection of these other things. Or they may notice a problem when doing routine maintenance and let you know. Either way, you’ll get a heads-up when your vehicle needs more attention.

If you’re not convinced yet that your sedan needs regular service, consider this: not doing so will cost you in decreased gas mileage, lower performance and compromised safety. These could lead to expensive repair bills and costly accidents.

Just like a good dental check-up, a good auto check-up at TJ's Auto Center in Rockford can save you from experiencing embarrassing, costly and painful situations.

How Much is Enough for Rockford Auto Owners? Tire Tread Depth

Most Rockford drivers know that tires wear out and that the wear has to do with tread depth. Most of us have heard that “bald” tires are dangerous, but most of us picture a tire with no tread at all when we think of a bald tire. And when we take our vehicles in for preventive maintenance, the technician tells us they're need to be replaced long before all the tread is worn off. Just how much tire tread wear is too much? And how can you tell? Tires are and their condition is important to the safe handling of a vehicle, so it's for Rockford vehicle owners to know the answers to these questions.

First of all, it's important to understand that there may be a legal limit to tread wear. If your tires are worn past this limit, you have to replace them to be in compliance with Illinois auto safety laws. That's why measuring your tread wear is part of a vehicle safety inspection.

In some jurisdictions, tread must be at least 1.6 millimeters or 2/32 of an inch thick. This standard has been in effect since 1968. But this standard has recently been called into question, and some Illinois professionals are arguing that it be changed.

The safety issue that has brought this standard under scrutiny is the ability of a vehicle to stop on a wet surface. When a vehicle has trouble stopping, most Rockford drivers immediately look at the brakes as the source of the problem. But tires are crucial to safe stopping distances because they provide the traction required in a stop.

A tire's contact with the road surface creates traction, which allows for effective braking. On a wet surface, a tire only has traction if it can get to the road's surface. So tire tread is designed to channel water out from under the tire to allow it to stay in contact with the road. If the tire can't shift the water, then it starts to “float.” This condition is called hydroplaning. It is very dangerous for Rockford drivers since the vehicle won't stop no matter how hard the driver presses the brakes. Steering control is also lost.

A recent study tested the stopping ability of a passenger car and a full-sized pick-up on a road surface covered with only a dime's depth of water (less than a millimeter). The vehicles were traveling at 70 mph (112 kph) when they stopped on the wet surface. At 2/32 (1.6 mm) tread depth, the stopping distance was double that of a new tire. The passenger car was still traveling at 55 mph (89 kph) when it reached the stopping distance it experienced with new tires.

Let's suppose that you're on a busy Rockford road in a light drizzle and a vehicle stops suddenly in front of you. You just bought new tires and you brake hard, missing the vehicle with only inches to spare. If you hadn't bought those new tires, you would have crashed into that vehicle at 55 mph (89 kph). That is a major difference.

What if your tires had a tread depth of 4/32 (3.2 mm)? You would have crashed into that vehicle at 45 mph (72 kph). Still not a good situation. But it's better.

Now what if you were driving that pick-up truck? You wouldn't have missed that vehicle in the first place, and you would have crashed at higher rates of speed in both of the other scenarios. The heavier your vehicle, the longer its stopping distance. It's a matter of physics.

The results of this test has led Consumer Reports and others to ask that the standard for tread wear be changed from 2/32 (1.6 mm) to 4/32 (3.2 mm). The increased standard will improve safety on the road and save lives here in Illinois and nationally.

Of course, until the standard changes, you'll have to decide whether you'll be willing to replace your tires a little sooner.

You can use an American quarter to tell if your tread wear is down to 4/32 (3.2 mm). Place the quarter into the tread with George's head toward the tire and his neck toward you. If the tread doesn't cover George's hairline, you're under 4/32 (3.2 mm). With a Canadian quarter, the tread should cover the digits of the year.

You can measure the 2/32 inch (1.6 mm) tread wear with a penny. If the tread touches the top of Abe's head, it's at 2/32 (1.6 mm). Tires are super important when it comes to vehicle care. But their condition has a major impact on safety. We need to decide whether to sacrifice safety for economy. Keeping our tread wear above 4/32 in (3.2 mm) is good auto advice.

TJ's Auto Center Inc.
3427 E. State St.
Rockford, Illinois 61108
815-399-2886
tj-s-auto-center-inc.autotipsvideo.com

Super Slick at TJ's Auto Center Inc. in Rockford: Synthetic Oil

When you get an oil change, it's always a safe bet to just use the type of oil the manufacturer recommends. But sometimes we're asked if we'd like conventional or synthetic motor oil. We glance at the price tags on the two options and choose the cheaper one. But in this case, the more expensive oil might be the better bargain for Rockford drivers.

Conventional oil is made from petroleum. Its molecules form long hydrocarbon chains. Synthetic motor oil is either more highly refined petroleum or completely man-made. Its molecules are more uniform. This provides advantages over conventional motor oil.

First of all, the molecular structure of synthetic motor oil makes it more slippery than conventional oil so it lubricates better. This translates to better wear protection for Rockford drivers, cooler operating temperatures and more engine power.

Further, synthetic oil is more heat-resistant than conventional oil, and it doesn't vaporize as easily. It provides better protection for severe conditions like stop-and-go driving around Rockford and very hot or freezing Illinois temperatures.

Also, synthetic oil doesn't generate oil sludge like conventional oil. This prevents small engine passageways from becoming clogged, which can significantly extend the working life of your vehicle engine.

Manufacturers are aware of the advantages of synthetic oil, and many of them are using it to fill their vehicles before delivering them to be sold. Many owner's manuals now come with the recommendation to use only synthetic oil. Because synthetic oil wears better and protects better than conventional motor oil, it can be changed less often. If your vehicle came with a recommendation for synthetic oil, you may have noticed that the recommended period between oil changes is longer than what you're used to. However, if you switch to conventional oil, you need to be aware that you can't follow this longer service interval. You'll have to change your oil more often.

On the other hand, if you are using conventional oil and you switch to synthetic oil, you may be able to lengthen the time between oil changes. You can ask the pros at TJ's Auto Center Inc. for more information. They can offer you good auto advice about oils and service intervals based on your driving habits and requirements.

Oil changes are the hallmark of preventive maintenance at TJ's Auto Center Inc.. All Rockford drivers need them. So we should get excited about a product that reduces how often we need them. Synthetic oil is more expensive, yes, but it can pay for itself by lasting longer than conventional oil. And when you add in the hidden savings of an extended engine life and improved fuel economy, not to mention increased engine power, there's a good chance that synthetic oil actually saves cash in the long run. All Rockford drivers pay for vehicle care. But understanding what we're paying for can make us more savvy shoppers.

TJ's Auto Center Inc.
3427 E. State St.
Rockford, Illinois 61108
815-399-2886

Vive la Differential at TJ's Auto Center Inc. in Rockford

There are a lot of drivers in Rockford who are due for a differential service, but had never heard of a differential before. With front-wheel drive being so common in Illinois these days, the differential is just taken care of during a transmission service, so most Rockford folks don't even have to think about it. And rear-wheel drive differentials don't need to be serviced for years, so it's understandable that it's not something on the top of your mind. It's not uncommon for people in Rockford to not know they have a differential, let alone know that it needs service.

To better understand what a differential does, think about a track at any Illinois high school. There are lanes marked off on the track. For the longer distance races, the starting lines are staggered. The starting lines for the outside lanes are ahead of the starting lines for the inside lanes. That's to compensate for the longer length of the outside lanes. Staggering the starting lines means that each runner has the same distance to run.

The differential compensates for the difference in speeds between the inside vehicle wheel and the outside wheel in a turn, because they have to travel together through slightly different distances.

It's a very important function. When you think of it, all the power to get a vehicle moving goes through the differential. Most cars weigh between 3,000 and 6,000 pounds (1,400 and 2,800 kg) – trucks even more. The power from the engine goes through the transmission and then through the differential to the drive wheels.

That's a lot of work and requires very heavy duty parts. And those parts need protection. The differential fluid lubricates the gears in the differential and keeps them cool. The fluid eventually gets dirty and worn down. Some kinds of differentials require special additives that break down over time. So manufacturers recommend intervals for when to replace your differential fluid.

Your knowledgeable TJ's Auto Center Inc. service technician will drain the used fluid and check it out for metal bits, which could be a sign of excessive wear on the gears. He'll then replace the fluid and install the additives if necessary.

Your TJ's Auto Center Inc. service advisor can look up the vehicle manufacturer's recommended service interval or you can check your owner's manual.

At TJ's Auto Center Inc., we've been providing quality automotive service for our valued Rockford customers since . If you need to schedule differential maintenance, or any other automotive service, give us a call at 815-399-2886.

TJ's Auto Center Inc.
3427 E. State St.
Rockford, Illinois 61108
815-399-2886