Increase in tire diameter
It will be off ^
When I changed from a 25.6" to a 25.9" tire it was only off a little bit. But I've seen people go from a 25.6" to a 27" tire and their speedo was off. I expect myself to have to change it again when I go to a 26.4" tire soon
Our trucks speedo is off and I'm pretty sure it's completely stock except for larger tires that are on it when we got it. They aren't even super huge tires like most lifted trucks have and it is off.
Bullitts are better than Bullets
Faster than a speeding...............
2001 Bullitt being prepped for track duty
Corners > Straight line
HID end all thread