Mechanical Problems & Technical Chat - Don't know where to put this Speedometer

My speedometer laggs before it goes up and some times doesnt go up at all i have rims on my car 17's i think thats the reason but is there any way i can fix it without gogin to a mechanic?

Its not the rims

sounds like to me it could be your speedometer going bad

moved to genaral tech help

ok thanks ill guess ill just bring it in to the shop its messing up my miles now,

may be the sensor - What year ??