I currently have 9x3 inch flat free on my phoenix hd4 looking for a better off road tire and wheel set up for it as it is more often on grass and sand
According to Drive Medical, that model uses only a 9x3 tire size therefore, we wouldn't be able to confirm if this will work on that scooter as this is 9x3-1/2. If you change the size of the tire, you might also have to change the rim. We suggest contacting Drive Medical before making any changes to what is originally built for it.