Driving on bald tires is like playing roulette. Though you may be fine today, eventually your luck is going to run out.

The Feds don’t have any laws for tread depth, but 42 of the states, and all of Canada, do have regulations. They consider 2/32 of an inch to be the minimum legal tread depth. Two other states, including California, consider 1/32 to be the minimum and six states have no standards at all. Call us at Autotronics of St. Peter; (just call 507.934.9290) to find out what your requirements are in the St. Peter, MN, area.

Since 1968, U.S. law has required that a raised bar be molded across all tires. When tires are worn enough that this bar becomes visible, there’s just 2/32 inch/1.6 mm of tread left. But does that older standard give St. Peter vehicles enough safety?

Consider this: Consumer Reports recommends tire replacement when tread reaches 4/32 inch/3.2 mm. And the recommendation is backed by some very compelling studies. Now before we go into the studies, you need to know that the issue is braking on wet surfaces.

We tend to think of the brakes doing all the stopping, but St. Peter vehicles also need to have effective tires to actually stop the car. When it’s wet or snowy in St. Peter, MN, the tread of the tire is critical to stopping power.

Picture this: you’re driving in St. Peter over a water-covered stretch of road. Your tires need to be in contact with the road in order to stop. That means the tire has to channel the water away so the tire is contacting the road and not floating on a thin film of water – a condition known as hydroplaning. When there’s not enough tread depth on a tire, it can’t move the water out of the way and you start to hydroplane.

This is where the studies come in. We think St. Peter drivers will be surprised. A section of a test track was flooded with a thin layer of water. If you laid a dime flat on the track, the water would be deep enough to surround the coin, but not enough to submerge it. 

A car and a full-sized pick-up truck were brought up to 70 mph/112 kph and then made a hard stop in the wet test area. Stopping distance and time were measured for three different tire depths. First, they tested new tires. Then tires worn to legal limits. And finally, tires with 4/32 inch/3.2 mm of tread were tested (the depth suggested by Consumer Reports.)

When the car with the legally worn tires had braked for the distance required to stop the car with new tires, it was still going 55 mph/89 kph. The stopping distance was nearly doubled. That means if you barely have room to stop with new tires, then you would hit the car in front of you at 55 mph/89 kph with the worn tires.

Now with the partially worn tires – at the depth recommended by Consumer Reports – the car was still going at 45 mph/72 kph at the point where new tires brought the car to a halt. That’s a big improvement – you can see why Consumer Reports and others are calling for a new standard.

Now without going into all the details, let us tell you that stopping the truck with worn tires needed almost 1/10 of a mile (.16 km)  of clear road ahead to come to a safe stop. How many St. Peter drivers follow that far behind the vehicle ahead? Obviously, this is a big safety issue.

The tests were conducted with the same vehicles but with different sets of tires. The brakes were the same, so the only variable was the tires.

How do people in St. Peter know when their tires are at 4/32 inch/3.2 mm? Well, it’s pretty easy. Just insert an American quarter into the tread. Put it in upside down. If the tread doesn’t cover George Washington’s hairline, it’s time to replace your tires. With a Canadian quarter, the tread should cover the numbers in the year stamp.

Now you may remember doing that with pennies. But an American penny gives you 2/32 inch/1.6 mm to Abraham Lincoln’s head. The quarter is the new standard – 4/32 inch/3.2 mm.

Tires are a big ticket item, and most people in St. Peter, MN, want to get thousands of miles/kilometers out of them. Just remember: driving on bald tires is like playing roulette.

Have Mr. Washington look at your tires today. If he recommends a new set, come see us at Autotronics of St. Peter in St. Peter.

Autotronics of St. Peter
111 Jefferson Avenue
St. Peter, MN 56082
507.934.9290
http://autotronicsstpeter.com

You’ve heard that expression, change is good.  When it comes to your vehicle’s oil, change is not only good, it’s vital for the health of the engine.  But there’s one question that puzzles many drivers: how frequently should my vehicle’s oil be changed? There is not one simple answer, but here are some guidelines that will help.

It used to be pretty much a rule of thumb that vehicles got their oil changed once every 3 months or 3,000 miles/5,000 kilometers.  But times have changed.  Oil formulations have gotten better and engine designs have made longer oil change intervals possible. 

Most experts advise you to read the recommendations that come from the manufacturer that designed and built your vehicle.  Their designers and engineers know more about your vehicle than anyone else.  They spell out their recommended oil change interval and type of oil in your owner’s manual.  Many automakers say you can go at least 5,000 miles/8,000 kilometers between oil changes and many recommend even longer intervals now.  If you use synthetic oil, it doesn’t have to be changed as often. 

Ever wonder why you have to change your oil?  Your vehicle lives in a dirty environment.  Contaminants build up in your engine oil and, after time, they inhibit the lubricating properties of the oil.  Without optimal lubrication, increased friction inside the engine starts wearing down the metal parts, shortening the engine’s life.

Not only do vehicle manufacturers recommend oil change intervals in the manual, many also now alert drivers by a light or other electronic indicator on your dash.  It doesn’t exactly say, “Hey, time get your oil changed. This oil’s starting to wear on me.” But it does give you a pretty good hint.  Some of these warning systems simply measure the distance you’ve traveled.  More sophisticated vehicles have sensors that measure temperature, driving time and engine revolutions to determine when the oil is getting past its useful life.  Here’s one situation where it’s easy to see the light.  Do yourself a favor and don’t wait too long before coming in for an appointment at Autotronics of St. Peter. 

Oh, and driving habits matter, too.  Short trips with a lot of stop-and-go driving will stress your engine and oil more than longer trips at highway speeds. 

And here’s one more plus side to getting your oil changed regularly at Autotronics of St. Peter in St. Peter.  Our technician will also keep an eye on the rest of your vehicle to spot anything that might need attention.

The bottom line is this: Oil changes are good for your vehicle in so many ways and probably the most important maintenance service you can get.

Autotronics of St. Peter
111 Jefferson Avenue
St. Peter, MN 56082
507.934.9290
http://autotronicsstpeter.com

St. Peter consumers are demanding. We want a safe, reliable vehicle that handles well and is comfortable to ride in. Oh, and we want good fuel economy, too. We also want vehicle repairs that are cheap, fast and easy. Unfortunately, one usually comes at the cost of the other.

Today’s vehicles have made significant improvements in reliability and performance over the last few decades. They also deliver more power to St. Peter drivers more efficiently than ever before. For example, some of today’s 4-cylinder engines are equal to yesterday’s V-8’s. Our vehicles also offer an amazing range of features that make them more comfortable and convenient than ever before.

But all of that improvement has come at a price for St. Peter vehicle owners. Our vehicles are more complicated and difficult to repair than ever before. They have numerous mechanical and electrical systems. Fuel systems are so complex they have to be run by a computer. Our vehicles are covered with sensors and high-tech electronic equipment. Our dashboards rival the control panel of the first manned space flight.

With all that complicated equipment, it’s no wonder we call mechanics service technicians these days. You can’t learn to repair vehicles in the backyard with your dad anymore. Today’s Autotronics of St. Peter technicians have to go to school. School may come in the form of classroom instruction, online courses or both. Technicians are also trained on-site at the St. Peter service centers where they work (including Autotronics of St. Peter) to keep them abreast of constant improvements in vehicle engineering, diagnostic equipment and repair techniques.

Today’s technicians need to be certified to work on our vehicles. They can earn a variety of certifications in MN, but the highest of these is Master Technician. It’s like a graduate degree in auto repair.

Vehicle repair at Autotronics of St. Peter in St. Peter requires more than just training and certification, though. It also takes information and creative thought. St. Peter area auto service centers subscribe to data services, technical libraries and online repair communities in order to get the information they need to: work on various makes and models of vehicles, get recommended maintenance schedules, learn about non-standard features and locate hard-to-find parts in an unusual engine. They also use this information to help diagnose rare or difficult vehicle problems. Many auto repair problems also require a bit of creative thinking for the team at Autotronics of St. Peter to solve. St. Peter service technicians at Autotronics of St. Peter act much like doctors in these situations. They’re given a set of symptoms, and they have to come up with a diagnosis and treatment that will fix the problem. This process becomes as much of an art as it is a science.

A proper diagnosis, even by a highly qualified technician, can take time. And a technician’s time is going to cost us. It’s just the price of progress.

Of course, the best vehicle care for St. Peter vehicle owners is planned preventive auto maintenance. This is also the least costly way to keep your vehicle in good repair. Regular inspections and replacement of worn parts will prevent most repairs from ever being needed in the first place.

And with the amazing complexity of today’s automobiles, isn’t it good to know there’s someone out there with the knowledge, training and skill to give us good auto advice? Whether we need preventive maintenance or repairs, the team of automotive professionals at Autotronics of St. Peter can help us keep our vehicles on the road. We just can’t do it on our own anymore.

Autotronics of St. Peter
111 Jefferson Avenue
St. Peter, MN 56082
507.934.9290
http://autotronicsstpeter.com