I'm still on a bike so have no idea if this would help on the car tires of a trike, but since I started using Ride-On tire sealant and balancer, my tire wear is better. I don't add air nearly as often and when I do it's because I checked so many times I let enough out to need air again. I got to where I'd only check every other month unless something didn't feel right. Since I got a Indian I now have TPMS so can watch that way. Still I only add air just a couple times a year. Like right now I might add and because we are going into the warmer weather, I probably wont add any more until the weather begins to cool off in the fall. Point is, keeping good air pressure has got to help you with tire wear. Yes the stuff is a little expensive but that expense comes with a lot of benefit. Something to consider. We do use the stuff in my wife's Spyder and see similar benefits although not nearly as much as I see on my bike. Those car tires just have a lot more surface to leak air from. If they made a spray can of the stuff that you could coat the entire sidewall area inside first and it not migrate to the outer surface with centrifugal force, I'm certain we all could go until we need new tires and never check air pressure again. I really like the stuff that much. Pain in the butt to get inside the tire but boy is it worth the effort. I have noticed certain tires will leak air more than others. The tire compound must play into this I'm guessing.