rethread tires

[Yoda]

Pag sinabing Re thread iyun yung lalaliman lang ulet ung mga grrove ng tires to make it look makapal. Pag re cap yun yung nilalagyan ng additional rubber sa tires para magamit pa. Tama po ba?

Re-thread = lalaliman? Di ko alam ginagawa pala to. Is there enough rubber to make the threads deep again? Hope someone can clarify.