Join Date: Jan 2008
Location: Lexington, South Carolina, USA
Let me try to say this carefully and not give a wrong impression. I love the 1800 but one of my complaints with it is the harsh front suspension. You will always on rough roads have a bit of road feel into the handlebars. This is just a characteristic of the design.
Two other things if the ride has became excessively rough can be at fault.
One is the radial tires are very hard, I call them cement radials. Radial tires are simply hard and do not have the compression that bias ply tires have, so as a tire wears it gets a bit rougher in ride. A new tire will be quite more smooth for about 8000 miles , then it starts all over again.
The other is the anti-dive on the left fork can get to sticking or acting in an erratic manner but sticking and then working . It can get to the point it vibrates the front so hard it busts the filaments in the headlight bulbs. You can determine that by going down a known rough road about 35 mph and peering down the tunnel to the front forks. (do not run off the road and kill yourself) if you see the top of the fork action moving up and down a half to 3/4 of an inch it is working, if it is not moving then the thing is sticking, and needs to be serviced. Some even over-ride it or deactivate it , but this is a very bad practice and a great safety issue if you ever need to have full use of the front brake in an emergency stop.
Hope this helps.
The 1800 is my bike. The very best motorcycle ever made. I was enthralled with my first test ride on this machine. It is a great bike. A crotch rocket with storage bags.............As for oil I use the slick kind, and I like round tires, but as of late I have found square ones work best on the rear. Pirelli Eufori 195/55/16 @ 32 PSI