As of 2015, National Automotive Parts Association carries one type of size 24 tire and wheel through NAPAOnline.com. This product listing includes both a 24-inch tire and a 24-inch rim.
This wheel and tire set is from the NAPA Small Engine product line, and the product number is SME 708735. The tire material is solid rubber, and the wheel hub's finish is white plastic. The complete dimensions of this tire and rim set are 24 inches by 12 inches by 12 inches. This product comes with a limited warranty. Although this product is available to purchase online, you may wish to call your local NAPA Auto Parts to see if it currently carries it.