Flat Free Tire Sealant: Tested

Flat Free sent us some samples of the product to test and review for the site.

Here’s some info on the product:

Flat Free is a chemical solution tire sealant that when installed inside a tire, will provide full time protection against air loss for the entire life of a tire!

Flat Free is designed to seal

* tread punctures
* bead leaks
* rim leaks
* porosity
* tube, tire or wheel-related leaks

Flat Free has a revolutionary chemical structure that causes this tire enhancer to continuously remain fluid so that it will immediately fill and seal any hole (up to 1/4″) in the tread area where air can escape from the tire.

Because of this, Flat Free tire life enhancer gives you the benefit of much longer tire life coupled with less downtime and lower maintenance costs. Additionally, you will receive savings from maintaining proper air pressure.

Just to give you some background on the test conducted. We took mountain bike tire, pumped it up to 40lbs of pressure, used a bed of 5 nails to run over. If you watch the video you’ll see what happens.

Though on the end of the last test, the tire seemed to have sealed itself with Flat Free. But the next morning I followed up to see if the tube still had air, and unfortunately it was flat. Based on our tests, I cannot recommend Flat Free to our readers.

About the author

RL Policar is an avid mountain biker and the Editor In-Chief of MtnBikeRiders.com and BikeCommuters.com. Between the two sites, he's published well over 4,000 articles (and growing).