What is the procedure to remove the wheel from the rear axle, and how is the tire removed from the rim?
Generally speaking, you should just need a socket wrench to remove the wheel from the axle - we believe it's 5/8". As far as removing the tire from the rim, you would need to remove the bolts to split the rim. Once the rim is split, you can remove the old tire and install the new one. We sell a tool to help install the new tire back on the rim and there is a video on how to use it as well - if you watch the video, it will give you an idea of what bolts need to be removed to take it apart. You can find the tool and video
here With that being said, we are a parts retailer only and if you need any additional technical assistance we recommend reaching out to a local mobility repair technician.