To make your wheelchair wheels more suitable for use on the beach, there are a few options available that can help improve traction and mobility on sandy terrain. Here are some suggestions:

    Beach Wheels: One option is to purchase specialized beach wheels that are designed to move more easily on sandy terrain. These wheels typically have larger, wider tires with a low-pressure inflation that helps to distribute the weight of the wheelchair more evenly, preventing the wheels from sinking into the sand. Some beach wheel manufacturers also offer interchangeable floating wheels, which can be used to navigate in shallow water.

    Wheelchair Tire Covers: Another option is to use tire covers that are designed to fit over your existing wheelchair wheels. These covers are typically made from a durable material like neoprene or PVC and can provide better traction and flotation on sandy terrain. Some models have large treads that can grip the sand better, while others are inflatable and can be adjusted to the desired level of firmness.

    PVC Pipe: If you are on a budget, you can create your own DIY beach wheels by attaching lengths of PVC pipe to your existing wheels. To do this, cut two pieces of PVC pipe to the width of your wheelchair, and then drill holes through the center of each piece. Next, slide the PVC pieces onto your existing wheels, and then attach a crossbar between the two pieces to hold them in place. The PVC pipes act like oversized tires that can roll over sand more easily.

Overall, the best option for you will depend on your personal needs and preferences, as well as your budget. It's always a good idea to do your research and read reviews before making a purchase or attempting a DIY solution.

however I advise you a professional floating beach chair like the mobichair