20 replies to this topic

[Cooperman]

The difference between 10" and 12" wheels is about 4% - less when the 10's are new and the 12's are old.

There is no way the discrepancy is caused by the change in wheel size.

[mattrsa]

Is the speedo itself accurate?  I assume that its not 40% out otherwise you would have noticed before? 

 

If the speedo is fine and the odometer is not recording correctly then its probably an internal fault in the speedo or someone has been playing with it and fitted a km odometer to a MPH speedo.

 yes it appears to be accurate enough give or take. 

I guess I will have to whip the clocks off and have a look. 

Is there a guide somewhere on dismantling the clocks?

[mattrsa]

thanks for all the other replies. 

 

It really does seem that it is counting KM rather than miles but I will take a look at the weekend. 

[Ethel]

Hard to see how it can be anything else for the speedo to be about correct & the milometer to be out by that much.

 

Not even sure there's a combo of final drives & speedo gears that'd give that much error & then you'd have to combine them with a speedo that's out by the same amount in the opposite direction.

[Aria Aradhea]

1 km is 0.621 miles, which is exactly what you're observing.

[Tornado99]

Perhaps someone has replaced the speedo clock face card giving mph instead of kph, yet the odo still reads km's.