Speedometer Off

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

JBDive

Full Access Member
Joined
Aug 15, 2015
Messages
201
Reaction score
9
Location
NC
07 Sport was shipped with 225/75-16 but at some point it was switched to 235/70-16 which is what I run on my 02 and recently bought for the 07 as well. On the 07 however the speedometer is off right at 5MPH at 65, at lower speeds it is closer to being correct.

Is the tire size difference the problem with the speedometer? The diameter of the two is nearly identical, 5PMH would seem to be excessive.

Next question. Is this just a matter of having somebody program the computer for the 235/70 tires? If so is this a special tool only Jeep dealers have or will more OBD tools allow for setting tire size?
 

Latest posts

Top