Why Do New Tires Have Rubber Hair on Them?

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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.


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John

26 years of experience
549 reviews
John
26 years of experience
GMC Yukon XL 1500 - Brake Pads Replacement (Rear) - League City, Texas
I am so happy John is back. I trust him very much. He is efficient and has a tremendous amount of mechanical knowledge. He is a true asset to Your Mechanic.
Ford F-150 - Brake Pads Replacement (Front, Rear) - Alvin, Texas
I like John because he is very knowledgeable about all my vehicles. In addition he is very organized regarding how he performs his work.

Theodore

15 years of experience
1169 reviews
Theodore
15 years of experience
Mazda 5 - Brake Pads Replacement (Front) - Redmond, Washington
Theodore is a great guy, he was on time and completed the work in less than estimated time. He went beyond and fixed other issue as well.
Subaru Forester - Brake Pads Replacement (Front, Rear) - Marysville, Washington
Theodore was on time, easy to work with, finished the work in less than estimated time, plus fixed an additional issue that arose. The car drives great. We have already referred you folks to a neighbor and will definitely contact you for more work on our two vehicles. Thank You Best Regards Gail & Terry Johnson

Pardeep

20 years of experience
683 reviews
Pardeep
20 years of experience
Toyota Sienna - Brake Pads Replacement (Rear) - San Jose, California
On time and does the job quickly.. i’ve already had him do my other cars. I appreciate the pictures, assessments, and his quick work. Will use Pardeep again in future.
Acura MDX - Brake Pads Replacement (Front) - Palo Alto, California
Pardeep was great--it was a follow up appointment and was nice to have him back and taking care of the fixes he identified the first time around. 10/10 would have him service my car again.

Richard

10 years of experience
11 reviews
Richard
10 years of experience
Toyota Avalon - Brake Pads Replacement (Front, Rear) - Elk Grove, California
Well my brakes is needed to be change . Going to car dealer is really to put your money all in and it's takes hours or probably will be done today or you'll end up picking it up tomorrow. Before i book it, i already bought brakes at O'Reilly Auto Parts. Richard finished the job in 3 hours.

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