With the help of technical data found on this site, I converted my ST1100 to the Darkside. Thank you, it was very helpful. The recommended car tires were all 175/60R16. I selected the Federal Formoza and notice the car tire installation is a little shorter than the motorcycle tire so the bike sits up a bit straighter when on the side stand. This is an issue when parking on uneven ground. Has anyone tried a car tire that is the same height as the motorcycle tire? I'm guessing the size may be due to a clearance issue.