My 2004 Sahara came stock with 30" tires and at some point a PO changed them over to 31x10.5x15's. On the surface it doesn't seem like that much of a difference circumference-wise, but I really think that my odometer is off and probably my speedometer as well. I bought my Sahara literally 32 days ago and although I'm loving it to death and drive it as a DD plus "whenever I can", the odometer is saying that I've driven just under 2K miles. This is just not possible - hence my question. Would a 1" tire upgrade really skew the odometer that much? Unfortunately I do not own a GPS to confirm the odometer's accuracy. Should I just bite the bullet and switch the speedo gear? BTW, it's a 5-speed. On the plus side, if the odometer is skewed incorrectly and depending on how long the 31's have been on the jeep, I may have substantially less miles than what's showing on the odometer. Merry Christmas!
I have the same tire on my "06 w/auto, I checked mine versus the mile markers and found that the odometer was consistently 1/10th of a mile less.
Which would add up to more miles than what shows on the odometer.
There is probably a accurate way of doing it.
Hope this helps.
Thanks for the quick reply and for the link to change out the speedometer gear. I think I will try to borrow a buddy's GPS after the holidays are over to accurately see just how much it's off. I'll let you know what I find out. I'm going to go ahead and order the speedo gear - it's certainly cheap enough. Thanks again!