According to the company, the sealant tyre is 10 % heavier than a normal tyre, but its braking and handling ability is equal to a normal tyre. Although global tyre companies such as Continental and Pirelli have already released such products in the market, this is the first Korean company to have done so.There are two types of tyres that continue to operate even after being punctured: run-flat tyres and sealant tyres. According to Kumho, run-flat tyres need to be replaced shortly after being punctured. But since a sealant tyre automatically seals the punctured area, the tyre does not have to be changed right away.Kumho said its sealant tyre is based on its Majesty Solus model and will be released in three sizes in early January 2014. Kumho said sealant tyres from other tyre manufacturers are already standard on cars like Hyundai's Equus, Kia's K9 and Volkswagen's Passat and CC. The company hopes that its product could gain a share in the replacement tyre market and supersede more expensive imported tyres.