Siping reduces friction heat and its effect on your tire by allowing the tire to cool. The sipes act by isolating heat into small “corrals” and allowing air to pass between them, thereby dispersing the heat and naturally cooling the tire.

Is tire siping good or bad?

Proper siping "can make a fair tire into a good tire," he says, adding that sipes also improve stopping distances. In addition, the presence of sipes may extend a passenger tire's life since they "cool" the tire by letting air into the tread, which reduces harmful heat build-up, he claims.

What are the disadvantages of tire siping?

Voided warranty: Having your tires siped could void any tread-wear warranty you have on your tires. This means that if your tires get irreparably damaged and need to be replaced, your warranty may not cover you, which would result in you being on the hook for hundreds of dollars in replacement tires.