Purchasing Tires

Contributed by Greg Bailey

How do I know when I need new tires?
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Manufacturers and many state laws recommend replacing tires when tread depth wears down to 1/16". (When new, tread depth is 2/5" to \\302\\275".) When you reach 1/16" you can see the wear bars (rubber strips which are darker than the tire). If you cannot see the wear bars, insert a penny into the tread, Lincoln's head first. If the tread does not reach the top of Abe's head, consider replacing the tires.
How many tires do I need?
How do I find the right tires?
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Consider the type of driving you do, the weight you carry, the temperature where you live, etc.
Do I need summer tires, winter tires or all season tires?
Do new tires require any special treatment?
Must I replace tires with the same size tires?
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Never choose a smaller size than those that came with the car. Tires should always be replaced with the same size designation -- or approved options -- as recommended by the vehicle manufacturer.
What is the "on the road" cost of the tires?
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What is included in the quote. You want to know that total cost which should include:\012mounting and balancing\012valve stems\012tire disposal\012alignment check\012rotation
What is speed rating?
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The speed rating indicates the max service speed for a tire. This letter will appear near the end on the tire size. Note that not all tires have speed ratings.\012H=130 Mph\012Q=99 Mph\012S=112 Mph\012T=118 Mph\012U=124 Mph\012V=130+ Mph\012Z=149+ Mph
What is load index?
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The load index is the Max load (in pounds) that can be supported when properly inflated
What warranties apply?
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Tire warranties are stated as number of miles for example, tires are good for 50,000 miles. Ask if warranty is prorated based on number of miles elapsed.