Self-sealing tires are a variation of Run-Flat technology, which allows you to continue driving despite a minor puncture of your tire. Designed with standard tire construction, self-sealing tires have a great feature on the inner lining of the tire—an extra lining of sticky gel-like polymer sealant.
If the tire is punctured, the sealant immediately fills the void, coating it and forming a permanent seal. This revolutionary innovation does away with your tire losing air, causing you to pull over and replace the tire with a spare.
Self-sealing technology has been proven effective for sealing punctures. Each tire manufacturer has their own guidelines when it comes to self-sealing technology.
Selfseal® by Michelin: Seals punctures up to 1/4”
ContiSeal™ by Continental: Seals punctures up to 3/16”
DuraSeal by Goodyear: Seals punctures up to 1/4”
Seal Inside by Pirelli: Seals punctures up to 1/8”
Sealguard® by Hankook: Seals punctures up to 3/16”
Due to the fact that these tires are designed to seal immediately, you may never even know your tire was punctured. Even if you have self-sealing tires, you still have to drive safely, but it does afford you valuable peace of mind.