Your Tires Don't Float. (Until They Do.)

Your Tires Don't Float. (Until They Do.)

David Bishop |

You've seen it happen. You're cruising along on a rainy afternoon, everything's fine, and then: nothing. Your steering goes light. The car feels like it's gliding. For about two seconds, you're not driving anymore. You're along for the ride.

That's hydroplaning. And it doesn't care how long you've been driving.

What's Actually Happening Under There?

Here's the short version: your tires are supposed to push water out of the way. That's literally their job. Those grooves and channels carved into the tread? They're engineered to scatter water to the sides so the rubber stays in contact with the road.

But when there's too much water, not enough tread, or too much speed, your tires can't keep up. A thin layer of water builds up between the rubber and the pavement, and suddenly you're not driving on the road anymore. You're driving on water.

It doesn't take a flood, either. A light rain after a dry spell is actually one of the worst scenarios. Oil and road grime float to the surface, mix with the water, and create a slick layer you can't even see.

The Tread Connection (This Is the Part Most People Skip)

Let's talk tread depth for a second. We know; it's nobody's favorite topic at the cookout. But your tread is the only thing between your car and a very bad day in the rain.

New tires typically start with about 10/32 of an inch of tread. At that depth, the grooves are doing their thing: channeling water, gripping pavement, keeping you in control. But as tread wears down, those channels get shallower, and your tires lose their ability to move water out of the way.

Here's where it matters most. The Safe Tread Alliance and safety experts across the world recommend replacing your tires at 4/32 of an inch. At that depth, your grooves are too shallow to move water fast enough, and your stopping distance on wet roads gets scary long. At 2/32, you're at the legal minimum, and your tires are basically slicks in the rain.

If you're not sure where your tread stands, we can tell you in about five minutes. Since we're the Home of the Free Alignment, we're already under there looking at your tires. Checking tread depth is just part of what we do. (Curious about how tread wear works? Check out our post on why tires wear unevenly.)

Speed Makes It Worse. Way Worse.

This one's simple. The faster you go, the less time your tires have to push water out of the way. Hydroplaning can start at speeds as low as 35 mph with worn tires on wet pavement. At highway speeds in heavy rain, even tires with decent tread can lose contact with the road. That's not a tire problem; that's a physics problem.

The move? Slow down in the rain. Not crawling, but enough to give your tires a fighting chance. And if you see standing water on the road, don't blast through it like you're in a truck commercial. Ease off the gas and let your tires do their job.

One more thing: turn off cruise control when it's raining. Cruise control can actually cause your wheels to spin faster when they lose traction, which makes hydroplaning worse. You want your foot near the pedals so you can react, not a computer deciding to speed up.

What to Do When It Happens (Because Panic Isn't a Plan)

If you feel your car start to hydroplane, your instincts are going to tell you to slam the brakes. Don't. Here's what to do instead:

• Ease off the gas: Don't accelerate. Don't brake. Just lift your foot and let the car slow down on its own.
• Keep the wheel steady:  If you need to steer, make small, gentle corrections in the direction you want to go. No sudden moves.
• Wait for grip:  It usually only takes a few seconds for the tires to reconnect with the pavement. You'll feel it in the steering.
• Breathe: Then get your tires checked. If you hydroplaned once, your tires are trying to tell you something.

The Fix You're Probably Putting Off

Look, we get it. Nobody wakes up on a Saturday excited to check their tread depth. But your tires are the single biggest factor in whether your car handles a rainstorm or becomes a problem on the highway.

If it's been a while since you've had your tires looked at, now's the time. Spring rain isn't a suggestion; it's a guarantee. And the five minutes it takes us to inspect your tires could save you from a really bad afternoon.

At Tire Discounters, a tire inspection is always free. We'll check your tread depth with actual gauges (not pocket change) and look for uneven wear that could signal an alignment issue. If it's time for a new set, we'll send you out with a free alignment so they wear evenly and last longer. That's the Out the Door with More® promise.

Don't wait for the skid to tell you what your tires already know.

Schedule Your Free Tire Inspection →