What Are Your Tires Trying To Tell You?
You may not know it, but your car's tires may be trying to communicate with you. Really. Although they can't talk, what they look like speaks volumes. So grab this article and let's head outside to spend some quality time with your tires.
Regularly checking your vehicle's tires can save money and even lives. Keeping them inflated to the manufacturer's specifications will keep them from wearing faster, as even a small degree of underinflation (4 psi) can decrease a tire's life by as much as 10 percent. As for safety, underinflation is the single largest reason for blowouts; plus, it can cause your car to take longer to stop.
Ready to commune with your tires? Okay. I'll tell you what to look for and what the different signs mean.
Underinflation: When a tire doesn't have enough air, its sides sag and puff out and its middle section pulls up and away from the pavement. Only a small portion of the tread makes contact with the road. Underinflated tires show wear on the edges.
Overinflation: When a tire has too much air, only its middle section touches the road surface. The tire's sides pull up and away from the road and just a small amount of tread makes contact with the road. With overinflation, the tire shows excessive wear in the middle.
Tread wear on one side only: An irregular tread wear pattern on the tire — with more wear on one side than on the other — is often an indicator of alignment problems.
Tire is worn erratically: If a tire is worn erratically (this is a pattern referred to as cupping or scalloping), it may be that the wheel is out of balance or the shock absorbers or ball joints may be worn.
The inflation and wear issue is tremendously important because the only connection between your car and the road are the tires — and the contact patches are no bigger than the size of your hand!
If tires were wide and smooth, with no grooves or indentations, that would provide the maximum surface for contacting the road. Once grooves are made, the amount of tire touching the road is reduced. But tires must have grooves, as they provide drainage for water, mud, and snow so that secure contact with the road can be maintained.
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