I added my RideOn to all my new tires Friday. It was a bit rough at first but smoothed out in a relatively short time. Reading the amounts on the bottle while putting them in is kind of hard and my two front tires are slightly different by about an ounce and a half. My ride does not seem to be affected though. I rode a bit before work and then quite a bit yesterday as well. These tires feel good. I really like my new rear tire as well. I am just itching to ride all the time lately. I am having so much fun, I love my spyder and all the neat things we are doing to it and with it.