speedometer issues;

[cdn trail 23]

took my little beauty for a three hour spin yesterday, and i noticed the speedometer was five to eight k/m different than my new gps navigation unit , is this common or can the speedo be reprogramed . would appreciate some advice on this . thank you for any replies cdn trail 123

 

[Kritou]

I think your options are an expensive Opmid or cheaper Speed Healer

 

[m in sc]

3-5 mph (4.8-8 kmh) is pretty normal variance in the range of speedometers.