i just put in 3:73's and was wondering how far off my speedo is.
it seems like i will be following someone doing 60 and my speedo says im doing 70 is that right.
just need to know so i dont get a speeding ticket
thanks eric

 

get a stopwatch... or just use the watch on your wrist... put it at 70mph... and get the time between mile markers... that'll tell you how fast your really going when the speedo says 70

 

you should really get it fixed as soon as possible becuase in a couple years when you go to sell the car it will have alot more miles than it actually does.