Radial Care: How to Choose and Use

Posted on August 14, 2009 by - Also by this author

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The practical primer on tire care goes like this: Learn how to determine the correct tires for your vehicles, what the numbers on the sidewall mean, what you can fill the tires up with besides air, how to inspect your tires, and tell when to replace them.

Inspect Tires Daily

A quick visual inspection can tell you a lot about your tires and your suspension system, but it will not tell you if they are properly inflated. The only way to see if the tires have enough air is with a quality air pressure gauge. Don't rely on the gauges on service station hoses as they are rarely calibrated and inaccurate. When inspecting tires, check for even tread wear first. Abnormal tread wear may indicate your tires are not properly balanced, your vehicle is out of alignment, or your tires are not properly inflated.

Looking from the inside to the outside, the tire should be smooth and level all the way across when running your palm on the surface. Vibrations at certain speeds or steering wheel shakes indicate your tires are not balanced. The surface will become "cupped" and it will be felt in the palm of your hand. A vehicle "pulling" to the left or right is probably out of alignment. The constant tug on the steering wheel will cause uneven tread wear on the inside or outside edge of the tire.

Once a tire becomes severely worn in an uneven pattern, it must be discarded. That could be costly if not caught early. Over-inflated or under-inflated tires also can ruin tread that needs to be replaced prematurely. Under-inflated tires will break the sidewalls down, cracking the sidewall, while over-inflated tires will wear down the center of the tire. If your tires have any cracks in the sidewall, bulging, or discoloration, you should replace them immediately.

Regular rotation of your tires can extend their life. Worn shock absorbers also can cause excessive wear on your tires, so be sure to inspect and change them as often as the manufacturer suggests or when worn.

Selecting Proper Tires

The manufacturer of your car is federally mandated to provide a recommendation about the size and type of tires best suited for your vehicle on a placard on your vehicle. You may find this attached to your door edge, door post, glove compartment door, or inside your trunk lid.

Understanding the numbers on the sidewall will help you determine the best tires for you as recommended by the manufacturer. The numbers are standardized by federal law. Tires also have different types of tread patterns and are referred to as All Season, Touring, Grand Touring, Performance, and Snow or Winter tires.

The All Season tires offer the longest tread and are suitable areas without much bad weather. Touring tires offer better handling and a quieter, smoother ride, but cost more than All Season tires. Grand Touring offers an even higher level of comfort. Of course, Winter tires are made to handle harsh winters and are removed after winter has passed.

Make sure you buy a complete matched set of tires for your vehicle. Installing a matched set provides a better ride and will allow you to clearly identify problems with your tires.

Where to Buy

Just as we sell service over price, there is great value in finding a local tire dealer to work with regularly. Whether it is a national chain such as Firestone or Goodyear, being a regular customer can bring a higher service level as well as free flat repair, free rotations, and even roadside service.

Consider the services offered by your local tire dealer and ask about a wholesale account or commercial account for discounts based on volume. Your tire dealer can perform alignment services, oil changes, shock inspections, and other mechanical services on the suspension system of your vehicle.

There are many Internet based tire dealers such as,, and, which offer deep discounts on tires shipped to you. What you may save in the price of the tires might be offset by the cost of installation in some cases, so know who will mount your tires when they arrive and what it will cost to factor this in.
Of course, private clubs such as Costco generally sell tires and perform installation at discount prices.

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