Underinflated tires waste gas for lots of folks in the San Diego area. Think how hard it is to walk in sand – you just have to work harder because of the resistance. When your tires don't have enough air in them, their rolling resistance is dramatically increased and it simply takes more gas to get from here to there.Always check your tire pressure when you gas up at one of our local San Diego service stations. If they're low – even just a little bit – bring them up to proper pressure. There's a sticker on the inside of your driver's door that gives the manufacturer's recommended tire pressure.And don't rely on your tire pressure monitoring system to alert you to when you need more air. The TPMS system is set to warn you when pressure drops 20 percent below recommendations. That's severely underinflated and you needed more air a long time ago. And if you have a slow leak – get it fixed right away at John's Automotive Care ... read more

Every San Diego vehicle owner has to purchase tires at some time or another, so it's a good idea to understand what the choices are. The best seasonal performance is achieved by purchasing tires to match the season you are driving in. Summer tires are designed for hot temperatures. The tread is engineered for good traction on dry or rainy CA roads. But the rubber compound in summer tires gets stiff when temperatures drop below 45°F (7°C), and snow and mud can pack into the tread, reducing the traction of the tire.Winter tires are designed for good traction on snowy surfaces. The tread actually throws snow off of the tire as the wheel turns. The rubber compound in a winter tire is soft so that it will remain flexible at temperatures below 45°F (7°C). At higher temperatures, however, the softer rubber wears down rapidly.All-season tires sacrifice some of the extreme performance of summer or winter tires, but they maintain adequate traction in either type of San Diego wea ... read more

Do you like to shop for shoes in San Diego?When buying a running shoe, is quality important?Does durability matter as long as the shoes look fabulous?Would you rather have one pair of long lasting shoes or two pairs of lower quality shoes at the same price?Is the warranty important when buying tires? San Diego drivers should also think about the safety aspect of tires. The tires do a lot of work – they carry the weight of the vehicle and you and your passengers. You want to be sure they hold the road and provide good traction on CA freeways and surface streets. If you carry heavy loads or tow a trailer on CA highways, the tires need a high load rating.Ask your friendly and knowledgeable San Diego tire professional at John's Automotive Care. I think it's important that San Diego residents understand the effect of price on a tire's quality, performance and durability. When I was a kid, my dad would say, “Pay twice as much and bu ... read more

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

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

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

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

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

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

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