I found out about this stuff from a replied post on this forum (HDT). So being I'm running tube tires I checked it out. Read up on it, then called and talked at length with a very straight forward salesman on it. He told me that all of the attributes shown in the videos and ads are for TUBELESS tires only. BUT it still works in tube tires also, just not quite as well. Specifically he told me that with ride on sealant in both a tubeless and tube tire, the tube tire will not be able to withstand as large a puncture as the tubeless and still keep running. BUT it will be able to take most small size nails even in a tube tire. Additionally if the projectile travels up into the tire cavity and strikes the rim side of the tube it will tear it since the ride on sealant only covers the treaded area. He was very honest about it and it sold me. I just bought 3 bottles of it. He said one bottle in each tire would cover a flat but to also get the balancing advantage of it, my size tires needed an additonal amount of the 3rd bottle. If you care to watch it this is a very impressive video (of tubeless) YouTube - Tire Sealant - Ride-On Tire Protection System (TPS) Just bought me three bottles on Ebay at Ride On - Dynamic Tire Balancer & Sealant | eBay for $23 includes shipping. I checked yesterday and it's $31 for only two bottles local in town.