hi john, i am going by 2 or 3 posts on this forum from other members. i have the slime tubes in my friction drives. but i have not put the miles on like some other members, so i have not had any problems. i also have the heavy slime tubes in some of my builds. i think it gets very hot where he is, thats why i mentioned it. maybe they will post on this thread and explain their experience. i looked at the tuff thin liners at sports academy a year ago, they looked good. the green slime plugged two of my tire pumps. later ron