Speedometer calibration with different tires?

[Retiredwarhorses]

I just want to buy a replacement.

that panal is utterly worthless....you will want it gone after the 5 ot 6th time you have to remove it for doing anything on that side of the truck. The way it’s attached to the throttle lock makes it an absolute PITA to install quickly

 

[cg25713]

Thank. You're right. I'll think about it.