[Sapphireho]

Originally Posted by Dadhawk

You are partially correct. The international standards say the speedo can never show below actual speed when tested, but can show as much as 110% of actual speed. So, in theory, it would never cause you to speed.

Now, that is with standard tires, etc, etc.

I think if you go have it tested and it shows it was inaccurate, then you can use that in court, but its very unlikely it will be in your favor.

This is how my lotus is. Drives me crazy. 80 on the Speedo is actually 74.

They even tell you that in the manual.