@b3soy: Knobby tires, also known as mountain bike tires, are a type of tire designed for off-road cycling. They are characterized by their tread, which consists of knobs or lugs that provide extra grip on the terrain. The term 'knobby tires' is thought to have originated in the late 1970s and early 1980s in the United States. #tires #fyp #fypシ