DF250RTC Speedometer Doesn't feel accurate

[RacerX125]

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

[euphonius]

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?

Get yourself a GPS that shows your current speed, and compare the two speed readings. Most Chinabikes are off by 10-15%, sometimes more.

cheers!

[4950cycle]

My DF 250 RTB reads 4-5 MPH fast at 55 to 65 actual MPH .