A Wheel is a vehicle part that appeared in all of the Mario Kart installments, but was only customizable in Mario Kart 7, Mario Kart 8, and Mario Kart 8 Deluxe.
Mario Kart: Double Dash!! was the first to break away from the uniform template of the previous games and introduce all-new kart designs, and with those new karts came new wheel designs, although they were still part of the kart itself. Mario Kart 7 separated tires selection from kart body selection, meaning that each tire got its own set of stats. Most tires have relatively the same stats, but some were radically different from the rest, including the Monster tires. The wheels have changed constantly throughout the two games, varying in size, features, and designs. There are a total of 10 tires in Mario Kart 7 and 18 tires in Mario Kart 8/Deluxe, 21 if you include DLC. Here is a list of all the tires, arranged by game.
Mario Kart 7[]

Slick Wheel

Blue Standard Wheel
Mario Kart 8 / Deluxe[]
- Standard
- Monster
- Roller
- Slim
- Slick
- Metal
- Button
- Off-Road
- Sponge
- Wood
- Cushion
- Blue Standard
- Hot Monster
- Azure Roller
- Crimson Slim
- Cyber Slick
- Retro Off-Road
- Gold Tires
- GLA Tires*
- Triforce Tires*
- Ancient Tires (MK8D Only)
- Leaf Tires*
* - denotes DLC