Hello, I just recently bought a 1994 Suzuki Intruder 800 as a first bike. I put around 2500 miles on it last year and did some limited freeway riding My bike doesn't have a tachometer (nor was it an option from what I can find) but seems to me like it's spinning a lot rpm's @ 70 mph. I wondered about the possibility of going to slightly larger diameter rear tire to help this situation & was advised by dealer not to do that. Has anybody done this or should I quit worrying about it? Mine now has around 27,000 miles P.S. I am not overly eager to ride on freeways very much anyway but I figure I'd like to feel better about keeping up with traffic if I do.