All-terrain mobility scooters include knobby tires, robust motors, and improved ground clearance to tackle gravel courses

https://wiki-byte.win/index.php/The_9_Things_Your_Parents_Teach_You_About_Scooters_For_Mobility

All-terrain mobility scooters add knobby tires, robust motors, and boosted ground clearance to take on gravel paths, lawn, and moderate off-road surface areas.