Ev, I would recommend you change the tire  before you install the Danson kit. Since it is close to the end of its life.you will find that the tire life on the trike will be less because of the fact that the tire will not be able to roll on the sides anymore since you dont  "lean" a trike. It is not a major job since the Danson kit is easily removed in about 20 mins for servicing, actually, it doesnt even really need to be removed since you can jack up the back and drop the tire down. I work with Danny Johnson and would be happy to answer any questions or feel free to call Danny too.

Mike