12.5 x 2.75 tire fits many mini dirt bikes with 2 stroke and 4 stroke motors (47cc, 49cc, 40cc). Includes new inner tube. This is a high quality QUING DA brand tire that lasts longer and holds higher psi. While it comes with an inner tube it can also be used as a tubeless tire at higher psi ratings. In most cases it is easier to simply use it with the inner tube, which is included.
Often, the pressure ratings on the sidewall of Chinese mini dirt bike tires are incorrect. Do not even think about putting anywhere close to 60 psi into the tires! Only inflate as much as needed depending on the rider weight. This will usually be 15-20 psi.