Chatman, John's right. When you alter the preload it changes the suspension dynamics in almost every respect to a greater or lesser extent. But obviously, with just preload adjustment, you cannot fine tune every aspect like you can on some bikes. However, if you play with the preload settings you will be pleasantly surprised at how you can make the bike feel. The Burgman 400 is a gem in it's simplicity and yet sophisticated in how it performs!