Hi all, I just put together a kit for my wife so she can ride better with me. We have a lot of hills in north AL . The engine is a Honda 35cc friction drive. The bike is a Hermosa , looks like a Schwin. The bike is fun to ride but I have gone through the original tire very fast especially after my son tried it out. I need to go to a kevlar tire but don't know which one. The tire is a 26 by 2.125.