Man I just bought a used 1996 CBRF3 a month ago and since the day I got it the Speedo has been off. I had to ride next to my brother and mark my speedo so I know how fast im going lol. My speedo has to read 67 for me to be going 60, and it has to read 77 to be going 70. I checked my sprockets because I know the previous owner used this bike for stunuting but they were stock. I also checked the tire size and its normal. The part that really confusses me is i looked up on the net and the tach readings match the speedo so either there both off or something is wrong. I ride the turnpike to work and i really dont like riding at 7000rpm for 20 minutes. Any suggestions?