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Category Archives: Tires and Wheels

San Diego Safety Systems: Tire Pressure Monitoring System

San Diego Safety Systems: Tire Pressure Monitoring System

Flats, blow outs, skids and longer stopping distances can all be the result of driving around San Diego on underinflated tires. Admittedly, it's hard to tell when a radial tire is underinflated. If your vehicle manufacturer recommends 35 pounds of pressure, your vehicle tires are considered significantly underinflated at 26 pounds. The tire may not look low until it gets below 20 pounds.New laws require all vehicles to include a tire pressure monitor system, or TPMS. This technology has been used by race car drivers for years. They are able to head off problems from underinflation by closely monitoring tire pressure on the track. It's up to your vehicle's manufacturer to determine which of many TPMS systems available they'll use to comply with the law.Obviously, all of this doesn't come free for San Diego drivers. Government studies have estimated the net costs. Of course, the TPMS system itself will cost something. Maintaining the ... read more

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Tires and Wheels

How Much is Enough for San Diego Auto Owners? Tire Tread Depth

Most San Diego 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 San Diego 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 CA auto safety laws. That's why measuring your tread wear is part of a ... read more

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Tires and Wheels

Under Pressure in San Diego: TPMS

Have you noticed an increase in price when you get a flat tire fixed in San Diego, 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, San Diego drivers who have changed a flat on the side of the road recognize that this has serious safety concerns as well.A ... read more

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Tires and Wheels

Wheel Balancing at John's Automotive Care

So you love your job, and your family life is great. Congratulations! You have achieved balance. But can you say the same for your wheels? San Diego drivers can tell if their tires are out of balance by vibrations at higher speeds on CA roads. If one of the front tires is out, you feel the vibration in the steering wheel. If it's a back tire, you'll feel the vibration in your seat.Tires and wheels are pretty heavy. When a tire is mounted on a wheel at John's Automotive Care, it is usually not perfectly balanced. So the technician will spin the tire on a machine to determine where it's too heavy. He will then place weights on the wheels in strategic locations to balance it out. When a tire is out of balance, it actually bounces down the road instead of rolling smoothly. Since the average size tire rotates at about 850 revolutions per minute at 60 mph/97 kph, it is actually slamming into the pavement 14 times a second. That's where you get your vibration.Most people in San Diego are sur ... read more

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Tires and Wheels

The John's Automotive Care Guide to Tire Specs

You know you need newtires, 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 San Diego 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 San Diego 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 San Diego 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 p ... read more

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Tires and Wheels

Winter Tires

What type of technology do you use? Do you prefer an 8-track tape or an iPod? When it comes to winter tires, much of San Diego driver's perception dates back to when 8-track was the best way to listen to the Bee Gees.Twenty years ago in CA, winter tires differed from highway tires only in their tread design. CA drivers called them snow tires back then, and they had big, knobby lugs that were designed to give good traction in deep snow. They had the same rubber compound as regular tires and they weren't very good on ice, packed snow or wet CA roads. They were not even very good on dry roads. They really helped in deep or loose snow, but they did a poor job the rest of the time. They were loud and rode hard. People couldn't wait to get them off in the spring.Then all-season tires started to appear in San Diego tire shops. All-season tires are really a compromise between summer and winter performance. They have acceptable hot weather ride and tread life and can get CA drivers through mild ... read more

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Tires and Wheels

Talk to John's Automotive Care About New Shoes for Your Vehicle

Custom wheels are one way that San Diego folks express themselves and personalize their vehicle. But they aren't as cheap and easy as sticking decals on your back window. There are several factors that need to be considered, including cost, the fit of the wheel, modifications that will have to be made to the vehicle, how the new wheels and tires will affect the operation of the vehicle, your driving habits and, of course, the style of the wheels. Most San Diego drivers start with the last factor: the style of the wheels. But that should be the last thing we choose. When considering custom wheels, you should first carefully consider your budget. Some wheels may require adjustments to your vehicle suspension system, brakes, or traction systems. You need to know what you can afford before you start shopping or get your heart set on a particular type of wheel. There are three basic ways you can change your wheels. First, you choose a ... read more

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Tires and Wheels

Automotive Tips from John's Automotive Care: When to Replace a Damaged Tire

Repair or Replace? That’s a question San Diego 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 John's Automotive Care 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 San Diego.Give us a call.John's Automotive Care6267 Riverdale StSan Diego, CA 92120619-280-9315http://www.johnsautomotivec ... read more

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Tires and Wheels

By the Numbers: Tire Replacement at John's Automotive Care in San Diego

Ever notice that your tire is covered with writing? It's like some hieroglyphic art form. Of course, San Diego drivers know that it's not just graffiti, but to most of us, it might as well be. Would you like to know what all those codes on your tire mean? It won't lead you to buried treasure, but it could help you make a better tire purchase at your local San Diego tire store.Prominently featured on your tire is a set of numbers and letters that looks something like this: 225 50 R 16 92 H. The first number is the width of the tire in millimeters, or the width between the sidewalls of the tire when it is fully inflated and not carrying a load. When San Diego drivers replace tires, they need to match this width number, or the tires won't fit properly in the wheel wells.The 50 is the aspect ratio of the tire, which is measured by taking the height of the sidewalls and dividing it by the tread width. If you drive off-road around the San Diego area, it should have a high aspect ratio. For h ... read more

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Tires and Wheels

Picking the Right Tires in San Diego

Shopping for tires in San Diego can be bewildering because there are many choices. Let's simplify. There are four main classifications of tires, each designed for different purposes.First off, there are summer tires. Those who buy summer tires in San Diego are looking for maximum summertime performance. The rubber is a little softer to help stick to the road on fast corners on CA roads. The tread has wide blocks at the shoulder to stiffen the tire in turns. The tread design can handle rain but really isn't set up for snow and ice. Next comes winter tires. San Diego people buy winter tires because they still like performance driving when it's cold and slippery on CA roads, so they need a tread design that'll really bite into ice and snow. The rubber compound is formulated to stay pliable when temperatures drop below 45 degrees F/7 degrees C so they get great traction even on dry roads. On the other end of the winter tire spectrum are tires designe ... read more

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Tires and Wheels
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