Demo shows the dangers behind worn tires on wet or snowy roads

"Good Morning America" offers a demonstration, plus how to stay safe on slippery roads ahead of the winter months.
3:29 | 11/28/19

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Transcript for Demo shows the dangers behind worn tires on wet or snowy roads
We are back with that warning about your dires. Tens of millions of you are hitting the road for the holiday and a lot of you facing some nasty weather out there. Our gio Benitez is here. Gio, this is an important reminder, yes, but if you are not looking at those tire, you could literally be putting yourself at risk on the road. Absolutely. T.J., good morning. We know cars are loaded with safety features and important us of low tire pressure. One thing they may not tell you, when you have low tread tires. That's when they have smoothed out and lost their grip. We have a warning about those tires and taking them out for a test run. They're like scenes straight out of action movies. A hydroplaning accident caught on camera. There's this near crash on wet experts say many times low street tires are to blame. People aren't aware so much that as their tires are wearing they're also losing performance in certain areas, wet, snow, ice. To show how dangerous low tread tires can be we go to the consumer reports auto test track. Our first demo, highgrow planing when they lose contact with the road and can happen when it has such low tread ittant able to disburse the water on the road. A wedge forms in front of the tire and the driver loses the ability to steer. We try brand-new tires. We approach the slight curve at 50 miles per hour driving through less than an inch of standing water. I'm able to stay on that You never lost control. Reporter: But it's a different case when we switch to low tread tires, about half the amount as the new ones. Experts say this is when you should start shopping for new Less channel, less grooves for the water to dissipate from. Reporter: Watch. Our car is not able to stay on that curve. We completely lose control of steering. The car wants to go straight. Reporter: Next we try braking in wet conditions. The tire with good grip will stop in a shorter distance. 0 to 60. Reporter: At 60 miles per hour -- I'll do a panic stop. We slam on the brakes while computers measure the distance it takes for the car to stop. With the new tires it stops at 161 feet. But when we hit the track with the low tread tires -- We're going to do the same speed, 60 miles per hour. Reporter: Ryan slams on those brakes again. That's a significant difference. Reporter: The car stops at 202 feet, about0 feet farther than with the new tires. That's more than the length of two cars. These tires are technically not warn out, at 4/32. A good time to start looking at new tires. Reporter: A decision that could save a life down the road. So important to take a look at this. How do you know when it's time to look for new tires? Here is a really easy way. Use a quarter to measure your tread depth. Check this out right now. If you put that quarter upside down and put George Washington's head in the groove. These are brand-new tires. See the top of his head a good thing but you can't see much of his head. That's the good thing. Over here when you move it over here you can really start seeing his head. That's actually very bad when you have to go ahead and look at new tires. You want to look for all season tires. About every 50 to 60,000 miles. T.J. All right. Gio, we appreciate it. Poor George Washington. Never imagined being used this way. But still he's serving his purpose.

This transcript has been automatically generated and may not be 100% accurate.

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