That seems like a simple question, but it's not. A number of things to consider. How does the wheel/tire combo attach to the axle? And how does the axle drive the wheel? With a cross pin, or a hex? What are the dimensions of the wheel? Diameter, width, offset? Good luck finding a match, it's hard sometimes. Especially if you're trying to do it online. This is something that you're going to need to see in person to figure out.