S20's on mine, had to replace the reat at 2700, now done over 3k, but I have had mine since August ;-)
Well...... not entirely correct !!!! The bike is a dream and you are one lucky bugger, but.... It is not in the KING of KING'S colours - The mighty REPSOL. Do i have to wait until 2013 for the next Honda Repsol to be released ? Signed - The Repsol Slut.
I wouldn't recommend cleaning the speedo with water. When I washed mine I ended up with water under the glass/plastic and that was with just a light sponging. Hopefully this won't have caused any longterm problems. I doubt it needs to go back to the dealer, but I will mention it next time I'm there.
I've recently put a warranty claim in to replace the top case (cover) due to water ingress. I put a carrier bag over mine when I wash it, the speedo that is.
Mine has S20's on at the moment although as I speak I have some Dunlop 211's winging there way to me ready for spring,can't wait.