Los Altos Auto Repair

Cayenne checking in with you,

Under-inflated tires waste gas for lots of folks in the Cupertino 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 Los Altos to Cupertino.

Always check your tire pressure when you gas up at one of our local Cupertino 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 twenty percent below recommendations. That's severely under inflated and you needed more air a long time ago. And if you have a slow leak – get it fixed right away at Allied Auto Works.

Get some air and save some gas.

Hi Cayenne here and well finally some rain here in California and what a better topic to talk about then tire failure,

Los Altos car owners know that under-inflated tires wear out more quickly. Under-inflation is also a major cause of tire failure for CA auto owners. More flats, blow outs, skids and longer stopping distances are all results of under-inflated tires.

It's hard for many Los Altos drivers to tell when a radial tire is under-inflated. If your vehicle manufacturer recommends 35 pounds of pressure, your tire is considered significantly under-inflated at 26 pounds. The tire may not look low until it gets below 20 pounds.

Uncle Sam to the rescue! A recent federal law required auto manufacturers to include a Tire Pressure Monitoring System - or TPMS system - in all vehicles. The system is a dashboard mounted warning light that goes off if one or more of the tires falls 25 % below the car maker's pressure recommendations.

The law covers all passenger cars, SUVs, mini vans and pick-up trucks. The system must also indicate if it has a malfunction. This technology has been used in race cars for years. They are able to head off problems from under-inflation by closely monitoring tire pressure on the track. It's up to your car's car maker to determine which of many TPMS systems available they use to comply with the law.

Obviously, all of this doesn't come free. Government studies have estimated the net costs. Of course, the TPMS system itself will cost something. Maintaining the system will have a cost, replacement of worn or broken parts and tire repair cost increases. The net cost is estimated to be between $27 and $100.

The costs are partially offset by savings in fuel and tread wear. There is also a saving in property damage and travel delay. Also, the government predicts fewer fatal accidents. They estimate there will be between $3,000,000 to $9,000,000 for every life saved.

Your safety is our priority at Allied Auto Works. We want you on the road and accident free. We've traditionally provided things like tire rotations, snow tire mounting and flat fixes at a very low cost. We've been able to quickly and cheaply provide the service, and we pass the low cost on to our valued Los Altos clients as an expression of our good will. That's why we're concerned about how you perceive the changes that this new law has required.

Every time a tire is changed: taken off to fix a flat, a new tire installed, or a snow tire mounted, the service advisor now has to deal with the TPMS system. Sensors need to be removed and reinstalled. The sensors have to be reactivated after the change. And, unfortunately, the very act of changing the tire damages some sensor parts from time to time - it's inevitable and can't be avoided.

Even a simple tire rotation requires that the monitor be reprogrammed to the new location of each tire. When a car battery is disconnected, the TPMS system needs to be reprogrammed. TPMS sensor batteries must be replaced periodically along with failed parts.

Los Altos service centers have purchased new scanning equipment to work with the TPMS sensors and updated expensive tire change equipment to better service wheels equipped with the new monitoring systems.

CA service professional have been trained on many systems and new tire-changing techniques. All of this adds up to significantly increased cost to the service center to perform what was once a very inexpensive service. So if you've noticed the cost of Los Altos flat repairs, tire changes, and rotations going up, please keep in mind that it's because of government mandated safety equipment. Your Los Altos service center just wants to keep you safely on the road - and it's committed to do so at a fair price. Rememer, this change will help you avoid the most common vehicle failure, and possibly a catastrophic accident.

Well I hope you learned alot about TPMS today and stay safe and dry during our much need rain.

This Cayennne and till next time,

Hello Cayenne here again, today we are going to talk tires and wheels,

Some of us just love tires. All those little rubber hairs on new tires and the smell is wonderful and dogs love to chew on them too.  We live in a great time for tires. No matter how you drive, where you want to go or the look you're after; there is a tire for you or your dog.

The same is true about wheels. The hardest part is choosing from the thousands of wheels available.

I may not be able to help with that, but I can help you get some things in mind before you consult with your Los Altos tire professional. Let's start with function and think about how you drive.

For example, maybe you have a large SUV but you don't drive off-road, so an off-road tread isn't important. Also, because you are not out bouncing over rocks in the CA backcountry, you don't need a high profile tire to protect your rims. So that means you can probably go with the low-wide look.

If you have a winter season with rain and snow or if you find you need better ice and snow performance, they make great, high-performance snow tires that won't make it look like you are driving a tractor.

There really are a lot of options for any given vehicle. You will find it very helpful to have a discussion like this with your Los Altos tire pro when you need new tires. You can find the best solutions for your driving needs and to make improvements in ride or handling.

Picking a wheel that is the same size as what you are now running is pretty simple. But, it gets trickier if you want to upsize. Just get some help when you go bigger. All that tire and wheel still needs to fit in the available space. You do not want your tires to rub when you turn or hit a bump. You also need to make sure your brakes and suspension bits will fit with your wheel of choice. It doesn't matter how great your car looks if it's not drivable.

Taller, wider wheels and tires probably weigh more than your stock shoes. And it's "unsprung" weight - that has a big impact on brake performance. The upsized shoes increase rotational inertia - if you go too big you may need to upgrade your brakes to compensate.

Another possible problem is an inaccurate speedometer. This happens because the number of rotations can change with the new wheels. Fortunately, speedometers and odometers are all controlled by the engine computer; so it is simple to get it reprogrammed and compensate for the bigger tires.

No matter what you are after: low cost, long life, high performance, traction or stunning good looks, your wheel and tire professional at Allied Auto Works in Los Altos, CA can help you identify your needs and give you a custom fit. With all the options available, you don't have to compromise. There is a tire out there with your name on it!  Dog gonit!

Til Next Week,  

Cayenne  

When winter approaches in Los Altos CA, we break out the dog sweaters, coats, boots and mittens. We want to be ready for winter conditions. Your vehicle needs to be ready for winter as well. The last thing you want is to get stranded out in the cold. You need your vehicle to be safe and reliable. It's a good idea to get caught up on any neglected maintenance items anytime - but the stakes are higher in the winter.

There are some specific things that we need to do in Los Altos CA to have our vehicle ready for winter. The most obvious is having the antifreeze checked. If the antifreeze level is too low, it can't properly protect your engine, radiator and hoses from freezing. If your car does not seem to be making enough heat to keep you warm, your antifreeze level may be low or you could have a thermostat problem. Get it checked out. If you are due for a cooling system service, now is a perfect time to have it done.

In the cold months around Los Altos we always worry about being able to stop in time when it's slick out. The first thing to remember is to slow down and allow yourself plenty of room to stop. Of course, you want your brakes to be working properly. A thorough brake inspection will reveal if the pads or any other parts need replacing. Check with your service consultant to see if it is time to replace your brake fluid. It accumulates water over time which really messes with your stopping power.

It is a really good idea to have your battery tested. A battery's cranking power really drops with the temperature. If your battery is weak in the fall, it may not be up to winter. There is nothing like a dead battery in a snow storm.

Which leads us to an emergency kit. You should always have a blanket or something to keep you and your passengers warm and extra dog biscuits if you and your dog get stranded. If you will be venturing away from civilization, pack more items such as food and water to help you survive and and extra dog leash. Keeping at least half a tank of gas is a good precaution if you get stuck and need to run the car to keep warm and it will help keep your gas lines from freezing up.

Allied Auto Works
2073 Grant Road & 1540 Miramonte Ave
Los Altos, CA 94024
650.968.7227

Winter in Los Altos CA always makes us think of our windshield wiper blades - usually during that first storm when they aren't working right. That's why it's a really good idea to replace your blades in the fall before the winter storms. If you live where there's a lot of snow and ice, you might want a special winter blade that resists freezing up. And be sure to have enough windshield washer fluid.

The final thing to consider is your tires. Any tire can lose pressure over time - up to one pound every six or eight weeks. For every 10 degrees the temperature drops you lose another pound of pressure. So if it was 80 degrees outside when you checked your tire pressure two months ago and now it's 40 degrees out, you could be down 5 pounds of pressure. That's enough to be a real safety issue and it wastes gas too. You may need special winter tires as well. Your tire professional can help you find the right tire design for your expected road conditions.

If you're getting winter tires, it is always best to put them on all four wheels. If you are only getting two, have them put on the rear - even if you have a front-wheel drive or four-wheel drive vehicle.

This is a very important safety measure recommended by tire manufacturers. Sliding or fish-tailing on ice and snow is a matter of not having enough traction at the rear end. That is why your newest tires should always be on the rear.

Well that is all for now, so gear and get ready for winter and tell Allied Auto Works, Cayenne sent you!

With the recent focus in Mt. View on improving fuel economy, Cayenne's knows how important it is to maintain our tire pressure.

Los Altos auto owners know that tires wear out, but Cayenne's wants to make them last as long as possible because they're not cheap to replace and she does not want you going into her bone money jar. In addition to saving gas, properly inflated tires last longer. Under-inflated tires will wear out more quickly, Cayenne says they could make a good chew toy.

Some Mt. View auto owners wonder if they should add a few extra pounds of pressure when they fill up their tires.  Cayenne barks "Bad idea!"  In fact, there are very good reasons not to over-inflate your tires. For one, the middle of the tread will wear unevenly because the full tread is not contacting the road properly. That also adversely affects your handling.

Stop by Allied Auto Works to see about tire maintenance for your Los Altos, CA vehicle Cayenne advises.

Allied Auto Works
2073 Grant Road  and 1540 Miramonte Ave.     
Los Altos, CA 94024
650.968.7227 or 650.947.7228

Every vehicle in the Mt. View area has a sticker on the driver's side door jamb that tells you the manufacturer's recommended tire pressure. This recommendation is an integral part of the vehicle's suspension tuning. A lot of engineering actually goes into the recommended tire pressure, so it's important for Mt. View auto owners to follow it.

What else do Los Altos car owners need to know about tire maintenance? Tire rotation and balancing are very important. Let's start with rotation. Because the front tires handle the brunt of turning forces, the shoulders of the front tires wear more quickly than the rear tires. Cayenne says rotate the tires so that they all get to do some duty on the front and they'll all wear evenly over their life.

For most vehicles, front tires are rotated to the rear and vice versa. Others recommend a cross rotational pattern. Some vehicles use an asymmetrical tire so those tires need to stay on either the right or left side – it'll say which on the tire. Some high performance cars have asymmetrical tires and different sizes on the front and rear. These can't be rotated at all. Your owner's manual will have details for your car.  Cayenne says make sure you check that manual.

How often should Los Altos drivers rotate their tires? Your owner's manual will have a recommendation. "My personal and trusted Allied Auto Works tech at  Allied Auto Works in Los Altos can do a visual inspection to let you know if it looks like it should be done. The interval is typically around 5,000 miles." barks Cayenne.

Cayenne barks, "You know, some Los Altos people don't think new tires need to be balanced. What they aren't taking into account is the wheel. Between the wheel and the tire – even a new tire – there's enough variation to require balancing." 

When you add the valve stem and tire pressure monitoring sensors required on new cars, balancing is definitely in order. When a tire's out of balance, it's actually hopping down the road. You'll feel the vibration through the steering wheel if a front tire's out of balance and through your seat if it's a rear tire.

Proper wheel balance promotes tire life and increases safet y says Cayenne. Historically, lead weights have been attached to the wheel to bring it into balance. Lead gives some environmental concern, so steel weights are starting to be substituted.

Also Cayenne mentions, always use the same size tire on an axle. Different size tires on the front or on the back can lead to some real handling problems. And tire manufacturers recommend that when you get two new tires, they be installed on the rear because that's where you need the most traction to avoid spinning-out.  Drive safely and have a great day!  

See you next week!  

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 the public's perception dates back to when 8-track was the best way to listen to the Bee Gees.

Twenty years ago, winter tires differed from highway tires only in their tread design. We 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 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. You couldn't wait to get them off in the spring.

Then all-season tires started to come along. All-season tires are really a compromise between summer and winter performance. They have acceptable hot weather ride and tread life, and you can get through mild winter road conditions OK. But there are some really good reasons to consider winter tires.

Modern winter tires do a terrific job in a wide range of winter conditions. First of all, below 45 degrees Fahrenheit, regular tires become hard and inflexible. That means they don't provide the road grip you need. Even if you don't live somewhere with a lot of snow, but it still gets below 45 degrees in the winter, you will be safer with winter tires.

In addition, they are specifically designed to more effectively move snow and water. That's the key to traction on ice, packed snow and wet roads. They use a micro-pore compound that allows the tire to bite into ice and snow. They also use wider grooves that run around the circumference of the tread to expel snow from the tire better. The lugs and grooves on winter tires have a special shape that throws the packed snow out of the tread as the tire turns. The tread is then open when it comes back in contact with the road and can provide good traction.

Winter tires also have a lot of sipes. Sipes are thin slits in the tread. The edge of the sipes grab ice and packed snow to provide tons of traction and to expel water and slush out of the tread. winter tires have a rounder casing to cut into the snow's surface. The treads on regular summer tires can actually get packed with snow instead and become very slick. winter tires offer 25% to 50% more traction than all-season tires. And when it comes to stopping power, all-season tires take 42% longer to stop than winter tires. Sometimes that's the difference between getting home safely and spending the night in a snow bank.

Now back when the 8-track was king, you just put snow tires on the drive wheels. That worked out OK because the rubber compound was essentially the same. Now, winter tires provide so much more traction than all-season or summer tires, that there's a huge difference between the traction at the front and rear ends of the car if you only put winter tires on the drive wheels.

For example: if you take a corner on an icy road and the rear end starts to slide out, essentially the rear is trying to pass the front because it's going faster. If you have high traction winter tires only on the front, they are going to be much more effective at transferring cornering grip and stopping power to the front wheels. This will actually cause the rear end to whip out even more.

That's why tire manufactures instruct their dealers that they must install winter tires on the rear wheels as well whenever they put winter tires on the front end of any vehicle. It's a major safety concern. It's strongly recommended that winter tires be installed on all four wheels on rear wheel drive vehicles as well. The front tires do most of the steering and braking work - it only makes sense that you provide the front end with the best traction you can.

People often assume that if they have four-wheel drive or all-wheel drive they don't need winter tires on all four wheels. Would you intentionally disconnect the four-wheel drive in poor road conditions? Of course you wouldn't, but that's essentially what you do if you only put winter tires on one end. It only makes sense to have the same level of traction and control at all four corners.

The province of Quebec in Canada has issued a law requiring all passenger vehicles, taxis and rental cars with Quebec license plates to install a full set of four winter tires between November 15th and April 1. It's that important.

Many modern cars have traction control and anti-lock brakes so people may think that they don't need winter tires. But you need traction to accelerate, steer and stop. The tires provide the traction so that the traction control and anti-lock brakes have something to work with.

Look for tires with the symbol of a mountain with a snowflake in it. This means the tire complies with the severe snow standard. All-season tires will have an M&S, for mud and snow, on the sidewall.

So when the temperatures drop below 45 degrees, be sure you have a set of four winter tires for maximum performance in snow, packed snow, ice, wet and dry roads. Your tire professional can help you find the right winter tire for your vehicle and driving needs.

Most Los Altos residents have experienced a flat tire. You know it's inconvenient and a pain. Our tires are important. Keeping them in good working order isn't just a big safety issue for Los Altos drivers – it also has a financial impact. With high CA gas prices, we've all heard about the importance of keeping proper tire pressure to save on gas. In addition, proper inflation promotes even tread wear so your tires last longer. 

There's another danger with under-inflated tires for Los Altos residents. Low tire pressure puts added stress on the structure of the tire itself, causing it to break down prematurely. Also, under-inflated tires generate more heat which also reduces tire life. So get those slow leaks fixed quickly – don't just keep adding air every few days. You want to avoid tire damage.

Los Altos residents should only hire qualified tire professionals to perform repairs - we have a whole team of them at Allied Auto Works. Los Altos folks can buy self-repair kits, but we advise you to save those for emergencies, like when you're off-roading and need a quick fix so you can hobble back to civilization and get professional help. If you need to use a repair-in-a-can product, remember it's a temporary measure only and your tire needs to be properly repaired as soon as possible.

Allied Auto Works
2073 Grant Road
Los Altos, CA 94024
650.968.7227
http://alliedautoworks.com

Hey Los Altos area drivers, are your tires worn out? What is the standard for our CA streets? How can you tell on your vehicle?

While there may be legal requirements for the Los Altos area, there are safety concerns that go beyond meeting minimum replacement mandates.

Two-thirty-seconds of an inch is the depth of the tire tread wear indicator bars that US law has required to be molded across all tires since August 1, 1968. When tires are worn so that this bar is visible, there's just 2/32 of an inch – 1.6 millimeters – of tread left. It's that level of wear that's been called into question recently.

We're referring to the tread depth on a tire, it can't move surface water out of the way and you start to hydroplane.

In a safety study, a section of a test track was flooded with a thin layer of water. If you laid a dime on the track, the water would be deep enough to surround the coin, but not enough to cover it.

A car and a full-sized pick-up accelerated to 70 miles per hour, or 112 kilometers an hour, and then made a hard stop in the wet test area. Stopping distance and time were measured for three different tire depths:

• New tire tread depth
• 4/32 of an inch, or 3.2 mm
• 2/32 of an inch, or 1.6 mm

So what happened with the 2/32 inch/1.6 mm tires on the car? Get this – when the car had traveled the distance required to stop with new tires, it was still going 55 mph/89 kph. Stopping distance was nearly doubled to 379 feet/116 meters, and it took 5.9 seconds.

Wow! That means if you barely have room to stop with new tires, 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 4/32 of an inch, or 3.2 mm – the car was still going at 45 mph/72 kph at the point where new tires brought the car to a halt. It took nearly 100 feet, or about 30 meters, more room to stop and 1.2 seconds longer. That's a big improvement. We can see why Consumer Reports and others are calling for a new standard.

Of course, stopping distances were greater for the heavier pick-up truck.

How do you know when your tires are at 4/32 inch or 3.2 mm? 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.

You may remember doing that with pennies. A penny gives you 2/32 inch, or 1.6 mm, to Abraham Lincoln's head. The quarter is the new recommendation – 4/32 inch, or 3.2 mm.

How do people feel about replacing their tires earlier? Well, tires are a big ticket item and most people want to get the most wear out of them that they can. But do you want that much more risk just to run your tires until they are legally worn out?

For us, and we would guess for many, the answer is "no".

Allied Auto Works
2073 Grant Road
Los Altos, CA 94024
650.968.7227
http://alliedautoworks.com