Kevin, I also have another question. Does the 19" wheeled bike and the 18" wheeled bike share the same front trans sprocket and rear sprocket. The reason I ask is a one inch shorter tire will travel close to 3"'s less , per revolution ,of the rear wheel down the road at the same RPM as the 19" wheel will. This means more RPM for the same speed as the 19" wheeled bike and less top speed on the 18" wheeled bike. I have built bikes and hot rods for years and have played with all kinds of gear ratio's and tire heights to get different performance. After 5 years of the people on the Suzuki Savage page saying it was impossible to change the bike from belt to chain drive, I had mine changed, in 2 months, by finding the sprockets off from other bikes to fit and all the ratios figured out for them for more accelleration, or more top end speed. I posted the how-to info on the Suzuki page and a lot of people changed to chain and love it. The 18" wheeled bike will need either a smaller rear, or larger front sprocket to perform the same as the 19" wheeled bike. Hutch