Does anyone have a suggestion for a good tire for my bike. I'm going to change them in the near future. Michelin does not make a rear tire, but does make the front. Can I change the size to 200mm or something else. I have Pirelli Night dragon front and rear.
I answered part of this in the other thread you started (one of the moderators will most likely combine them, they prefer you not start multiple threads on the same subject). Dunlop has just recently released the American Elite series replacement for the Harley branded 180/55B18 80H that came stock. Metzler is supposedly releasing a new ME888 Ultra in the 180/55B18 size as well, but I haven't seen the load rating for that tire yet.
The Pirelli tire you have now does not meet the minimum load rating requirement for your bike. You will find that to also be true for all the other 180/55-18 tires on the market from the other tire companies. NEVER downgrade your tires.
As for going with a larger tire, I'm sure you could shoehorn a wider tire into the frame but you would have to replace the rim with a wider one. There are no 200 series tires I'm aware of that can be used with your 18 x 5.0" rim.
Jerry