The answer to this question depends on several factors, including the types of tractors, the models of the tractors, and the specific sizes of the tires. Case David Brown and Massey Ferguson are tractor brands, but the specific models make a difference in the compatibility of their parts. Tractor tires come in a variety of sizes, with their numbers and measurements typically printed on the side of the tire. In order to determine whether Case David Brown tractor tires will fit Massey Ferguson tractors, you must compare the tire sizes from the two brands to see if they are compatible.