Thank you for the information. That spreadsheet is where I got some of my information along with reading posts. I just found the Shinko 230's in OEM sizes for $144.98 with free shipping. Do you think I would be unhappy with the Shinko front tire? I'm thinking for that price it may be worth a try. If I mount them myself, are the Dyan Beads good for balancing or do I need to go to a shop?
Have you tried ebay? My Shinko rear tire was 90 dollers. I have used the dyna beads and really like them. I went down the interstate and at 70 mph...there was a vibration on the mirrors, so they were hard to see....went back to the house, put the beads in, and went back to the same spot at the same MPH. Considerable less vibration in the mirrors.
I run Shinko front and rear, and have been happy, but I do know that I will probably have to change them towards the end of the season.