Adjusting speedo to new tires
 

Ok I just got set of 20's and some new tires. They are 275-65-20. Does that not work out to be a 34" tire. Isn't that what I should adjust my speeedo and outlook monitor to? Please help

Yup ... I would actually measure the tire though, in most cases the tire size metric or standard that is given, is never the actual diameter ... You have a bullydog, does it have a gps speed senor app on it???

Hope this helps a little

-J

I Doubt the outlook has the gps speed, I guess it reads from the obd and he speedo? But I do have them both set on 34" and they are reading different... Hmmm???

yeah, thats strange .... another calibration issue

My best bet Is gonna be to just take it to the dealer isn't it? get it done right

(275*65)/100=[178.75(2)]/25.4=14.07480315(+20)=34.07480315" tire. Ive heard you can plug into the truck with a good chrysler dodge scan tool and change it. Not sure tho...