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Summary: There's no set rule on how long tires should last, but the uniform tire quality grading standards are printed on the sidewall of the tire. Find out how to calculate how long tires are expected to last, based on their quality, with help from an automotive technology professor in this free video on car tires.
Bob Ricewasser is a former automotive technology professor and an avid car collector. He has a broad level of knowledge on vehicles, ranging from the "horseless carriage" era to...read more
"There's really no set rule on how long your tires are going to last. A lot of that is contingent upon the type and quality of the tires that you have on your vehicle. One thing that you want to look at is the uniform tire quality grading standards that are actually printed on the sidewall of the tire. As far as longevity, you're going to have a tread wear indicator, and that's going to be a number. One hundred is....indicates that a tire, under normal operating conditions, if it's properly inflated and the alignment is correct, should last thirty thousand miles. Most numbers that you see up there will be 270, you know, 400, something like that, and you can do the math and actually see how long the tires are going to last. You know, tread wear or tread life isn't the only criteria that you want to consider in a tire. There's also traction and temperature, and you need to, you know, get a tire that's going to fit the needs and the purpose that you're going to be operating the vehicle under. But the proper inflation and alignment and having the suspension in good working order, such as the shock absorbers and the springs not sagged out, will all lead to longer tire life. And, of course, your driving habit's very important, too. You don't wanna, you know, whip around corners or, you know, spin the tires. Things like that will cause premature tire wear in a hurry."