Here is one that no one seems to know. I own a GL1500 2000 GW. I've had my baby for around 4 years and from the first ride on the hwy at 140 kilometers an hour (90 mph) it had a bad vibration. When you look through the side mirriors all you see is blured lights from the cars behind. I had the head steering bearing changed new elite 3 tires changed a few times over the years and various other things. the vibration is much better but still there. The good thing is if you get caught at 50 klicks over the speed limit you get charged with racing which is a nasty charge and you can loose the vehicle. Since the hwy speeds are 100 kph on the major hwys it is a good warning device to slow down. I have been told that this is not unusual for the GL1500 wings to have this problem.