Tubeless tires are similar in appearance and structure to inner tube tires, except that they do not have inner tubes or padding. The air is directly pressed into the outer tire, and its sealing is ensured by the outer tire and wheel rim. A rubber sealing layer with a thickness of about 2-3mm is added to the inner wall of tubeless tires specifically for sealing air, and some also have a self-adhesive layer made of a special mixture attached below this layer. When a tire is punctured, the self-adhesive layer can self adhere the punctured hole, so this type of tire is also known as a tubeless tire with a self-adhesive layer. There is also a layer of tire bead rubber sealing layer on the outside of the tire bead to increase the airtightness of the tire bead and wheel rim. The bottom of the wheel rim is inclined and coated with a uniform layer of paint. The valve is directly fixed on one side of the wheel rim, with a rubber gasket used for sealing and tightened with a nut. The rivets for riveting the wheel rim and spoke plate are inserted from the inside and coated with a layer of rubber.

　　The advantage of tubeless tires is that they only fail during bursting, and leak slowly during perforation. The tire pressure does not drop sharply and can still continue to drive; At the same time, due to the lack of inner tubes, friction generates less heat and dissipates heat quickly, making it suitable for high-speed driving; In addition, it has a simple structure and a small mass.

　　The disadvantage of tubeless tires is that the sealing layer and self-adhesive layer are prone to air leakage, making it difficult to repair during transit. In addition, the self-adhesive layer can only adhere when the perforation size is not large. When the weather is hot, the self-adhesive layer may soften and flow downwards, thereby disrupting the balance of the wheel. Therefore, tubeless tires without self-adhesive layers are generally used. The inner wall of its outer tire has only one sealing layer. When the tire is punctured, it is tightly wrapped around the puncture material due to its compressed state, so it can remain leak free for a long time. Even if the puncture material is pulled out, the tire pressure can be temporarily maintained. Tubeless tires are generally used with deep rims in cars.