The Monster King Tires (Japanese: だいまおうタイヤ Daimaō Taiya Great Demon King's Tires or Great Archenemy's Tires) are an unused tires part, as they don't have a tire base.
They are the largest, heaviest and best-performing tires in the game. They are a bigger and boss-only version of the Monster Tires. However, the All-Purpose Tires and these both have the exact same grip and drift capabilities.