Bigger tires and wrong speedo
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Location: Huntsville, AL
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Year: 2000
Model: Cherokee
Engine: 4.0
Bigger tires and wrong MPH
I used to own a 1996 Mustang GT. Not only did I go to a bigger tire, I also went with lower gears. I.E. 3.27 to 4.56 gears. I had the option of using a speedo gear but in Ford's, once you go above the gear for 3.73 gears, the speedo gears don't last long because the teeth get much thinner. I had purchased a product called a speedcal. What it does is if I changed gears or tire size, I flipped some dip switches, would drive about 10 miles and it would recalibrate the correct speed. Is there anything like that for Jeep's? I currently have 33" tires and I know the speedo is way off. Almost 10-15MPH depending on how fast I am going.
Last edited by BamaJosh; 04-02-2013 at 08:59 AM.
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#8
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Year: 2000
Model: Cherokee
Engine: 4.0
I have been using a GPS speedometer app on phone since I got this Jeep. I just want to fix so if my wife decided to drive my Jeep then she won't get a ticket. I know I will be upgrading gears in the future but I need to get this fixed soon. My speedometer being off is also the reason why I am only showing getting 13mpg.
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