If you're wondering how to know what wheels fit your trailer, there are a few things you'll need to take into account. First, you'll need to know the size of your trailer's axle. This can usually be found on a sticker or plate on the trailer itself. Once you have this information, you can start shopping for wheels that will fit your axle size. It's important to note that not all wheels are created equal, so it's important to do your research and make sure you're getting the right size and type of wheel for your particular trailer. Another thing to keep in mind is that the load capacity of your trailer will affect what kind of wheel you'll need. If you're carrying a heavy load, you'll want to make sure you get a wheel that can handle the weight. The last thing you want is for your tires to blow out while you're driving! Finally, it's always a good idea to consult with an expert before making any decisions about what kind of tire or wheel is best for your trailer. A professional can help ensure that you get the perfect fit for your needs and avoid any potential problems down the road.