Most common tube wheel sizes are 20, 22 and 24 inches. Wheels with half-inch sizing are single piece for tubeless tires. Common sizes are 19.5, 22.5 and 24.5 inches. Truck wheels also come in several widths; a tire size chart should be consulted to match the tire size and wheel width.
Rims typically need replacement from damage from striking objects or corrosion. It’s typically recommended to replace the rim with the same type of rim for balance.