I went through two of the OEM tires on the back of the Rocket III before I went to a car tire. If memory serves me correctly the OEM is a 240/50-R16 and they were running around $250 each when I bought the last one. I presently have a Bridgestone 225/60-R16 on the Rocket. If I were to do it again I would go with a Michelin like I have on the Valkyrie. I am including a link to the original post on the Florida board where I put the Michelin on the Valkyrie. The Michelin is a lot more rounded on the edges.
http://www.valkyrieforum.com/bbs/index.php/topic,53150.0.html thanks for the info i'll pass it along. rears are going for close to 300 now and thats just crazy.