AUTONET TV

What's in a Number? (What Tire Numbers Mean)

You've probably never paid much attention to the writing on the sides of your tires, but they contain a wealth of information.  There's a long combination of letters and numbers that can tell you a whole lot about what tires your vehicle was designed to be riding on.  Let's check out this example found on an SUV: P245/70R17 108T.

The first letter, P, means it's intended for passenger vehicles.  If there's no letter, it means it's a metric tire.  If there's an LT at the beginning or end that means a tire designed for light trucks.

Moving on to our example, the 245 shows how wide the tire is in millimeters from sidewall to sidewall.  The number that follows in our example, 70, means the height of the tire is 70% of its width.  The letter after that in our example, R, describes the type of tire (on this vehicle, radial).  Following that is the diameter in inches, in our SUV example, 17 inches. 

How much load the tires' sidewalls are designed to take is what that next number is all about (108 in our example).  The higher the load index, the more weight the sidewalls can take.  And the last letter is the speed rating of the tire, in our example, T.  The further along in the alphabet that letter is, the higher its speed rating.  So now you know what those letters and numbers mean.  But why are they important?

When you are getting ready to replace those tires, those numbers are telling you what the original equipment was when your vehicle was new.  Sticking with the same rated tires is always a good idea.  If you don't know what you're doing, trying different sized tires and wheels can cause real issues when it comes to performance and safety, considering all the computerized systems now found on vehicles.  When in doubt, consult your service advisor when it comes to buying new tires.  He or she knows what those tire numbers and letters mean… and a whole lot more.

American Brake Centers Inc.
3435 Bashford Ave Ct.
Louisville, KY 40218
502-459-0355
www.americanbrakecenters.biz

Step Up your Stops

Let’s face it.  Many of us take our vehicle’s brakes for granted.  We step on the pedal, the brakes slow us down and stop us.  They’re also vital to helping us control our vehicles.  That’s why it’s important to think about brakes as one of the most important safety systems we have.  

Malfunctioning brakes increase our risk of accidents, can lower our fuel efficiency because of increased friction and can prematurely wear the other components of our vehicles.  

One of the ways we can keep our brake systems working properly is by periodically having the brake fluid replaced.  That means the old brake fluid in a hydraulic braking system is removed and replaced with clean, fresh fluid.  Brake fluid absorbs moisture over time, which lowers its boiling point and may cause the inside of the brake system to corrode. 

Replacing the brake fluid is not as simple as just draining the old fluid out and putting new in. Our technician uses specially-designed equipment to push the old fluid and contaminants (rust particles, dirt, air bubbles) out of the brake lines, calipers, wheel cylinder and master cylinder.  

When you come to us for a brake fluid replacement, you will find your braking performance will be as consistent and responsive as it used to be.  Your risk of brake fade or failure when you brake hard will be reduced. And brake fluid replacement will help prevent internal rust and corrosion in brake components. 

Some manufacturers recommend brake fluid replacement every 2 to 3 years, but it depends on what vehicle you drive, how you drive it and in what conditions. Your advisor will be glad to help you set up your next brake fluid service.

American Brake Centers Inc.
3435 Bashford Ave Ct.
Louisville, KY 40218
502-459-0355
www.americanbrakecenters.biz

Automotive Tips from American Brake Centers Inc.: When to Replace a Damaged Tire

Repair or Replace? That’s a question Louisville drivers ask when they have tire damage. Some punctures cannot be repaired because of their size or location. Punctures larger than a quarter of an inch (6.4 mm) are considered too large to be safely repaired. Punctures in the sidewall or near the shoulders may not be able to be repaired. And sometimes there is internal damage revealed on inspection that indicates the tire should not be repaired.

Run flat tires should not be repaired. Repairing high performance tires may make them unsuitable for motorsports. Your friendly and professional American Brake Centers Inc. service advisor can inspect your damaged tire and tell you if it can be safely repaired or if it should be replaced - and then help you get back on the roads around Louisville.

Give us a call.

American Brake Centers Inc.
3435 Bashford Ave Ct.
Louisville, KY 40218
502-459-0355
www.americanbrakecenters.biz

Poor Reflections (Door Mirror Problems)

Mirror, mirror on the door, why is my vision there so poor? Well, you could have a broken outside rearview mirror that's disabled your blind spot vision there and endangering your ability to see some of the traffic around you. 

Outside rearview (or door) mirrors are important safety devices that are thoughtfully designed to help drivers see.  And there are a variety of ways those door mirrors can develop problems.

One is when the glass is broken in them.  Sometimes it's caused by an accident or vandalism.  But without your ability to see in that mirror, you could be driving blind, unable to see drivers approaching from the rear in adjacent lanes.  Sometimes it's as simple as having the glass replaced.  You'll greatly enhance your safety if you do.

Then there's the door mirror that you can't adjust.  First, let's look at a common scenario in later models, the power mirror.  They're great when they're working, awful when they're not.  Sometimes the motor fails, the switch goes bad or the wiring fails to deliver power.

Or how about the manually-adjusted door mirror that has either frozen up or just flops around? In this case, the mechanism has corroded, jammed up or a part has broken.  In both power- and manually-adjusted door mirrors, it sometimes can be hard to keep them in the right position.  Plus, every time there's a driver change, it may be hard to adjust those broken mechanisms by hand.

Finally, heated door mirrors can be extraordinarily useful in eliminating fogging or icing up in certain weather conditions.  But those heating elements can fail, switches can break or wiring can go bad.  Suddenly your fogged over, frozen mirrors aren't doing you any good at all. 

Good drivers use those outside rearview mirrors all the time.  They should be working the way designers intended, to provide the driver with vital traffic position information.  That's the kind of safety device you should get fixed or replaced sooner rather than later.  It's well worth it if you prevent even one little accident. 

American Brake Centers Inc.
3435 Bashford Ave Ct.
Louisville, KY 40218
502-459-0355
www.americanbrakecenters.biz