Rear wheel rim 12" - 2.5 cast (drum brake) black China is a wheel rim for scooters and mopeds. The rim is the basis of the wheel, and the tire is mounted on it. The size in the name (diameter in inches and rim width) must match your wheel, and the brake type must match the hub.
It is time to replace it if the rim has cracks and dents, runout, or the tire does not hold air because the rim is deformed. After replacing it, check the assembly on a short ride and tighten the fasteners if necessary.
