Skip the auto shop - Our mechanics make house calls

Why Do New Tires Have Rubber Hair on Them?

tire hairs

There are little rubber hairs that you see on every new tire. Technically, they are called vent spews, which gives away their purpose for being on the tire. Many people think these hairs play a role in noise reduction or indicate wear but their primary purpose is air ventilation.

Those little rubber hairs are a byproduct of tire manufacturing. In a tire mold, rubber is injected and air pressure is used to force the liquid rubber into all the nooks and crannies. In order for the rubber to completely fill the mold, small pockets of air need to be able to escape.

There are small vent holes in the mold so trapped air can find a way out. When the air pressure forces the liquid rubber into all the orifices, a tiny bit of rubber makes its way out of the vent holes as well. These rubber bits firm up and remain attached to the tire when it's removed from the tire mold.

Though they serve no purpose in your tire’s performance, the tire hairs' presence is an indication that a tire is new. Tires that have been in service for some time, coupled with environmental effects, will eventually wear off the hairs.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

How to Buy Fuel Treatments
Adding a fuel additive to your gas tank when you fill up is one way to clean vital engine parts of deposits, improve the performance of your engine,...
How to Transfer a Car Title in Idaho
In order to prove ownership of a car, you must have the title. However, when a car is sold, given away or inherited, the title needs...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...


Related questions

Q: What should I know about tire inflation?

Part of your responsibility as a vehicle owner is ensuring that your tires are properly inflated at all times. Overinflated or underinflated tires not only wear badly, but they can be safety hazards as well. Here’s what you should know:...

Q: How do I check the tire pressure?

Checking the tire pressure of your truck is an important part of routine maintenance. Improper tire pressure can lead to premature or uneven tire wear and decreased fuel economy. To check the tire pressure. Obtain a digital or dial...

Q: bouncing feeling when going 40-43mph goes away after that speed

Hi there. If the tires are that large and the wheels have that configuration, then you may need new shocks. The factory shocks are not made for this size of tire and wheel. I have also seen this offset cause...