I currently have a DF250RTC when riding it I feel like its going slowly but speedo says that im going fast
for example when riding at 1st gear near shifting time to 2nd it is running at 30 MPH O.o so I'm not sure if the speedometer is accurate. How can I find out if it is accurate?






P.s. Sorry for being a Grammar nazi :D
for the record, I'm a motorcycle beginner