So jeep started out with 3.07s ran 33s and i think my speedo was about 4-5mph off. I now have 4.10s and 33s and it seems to be 10mph off? anyone know? my jeep is not exactly legal and if I get pulled over I am sure I will get cited on a bunch of crap.

 

http://www.jeep-xj.info/HowtoSpeedoGears.htm
I called Jeep on a Speedo gear and they was discontinued. But I did find a site with them on the net. About $40 each.

 

no point in buying a gear just gonna get 35s soon then 37s down the road

 

if you have a gps or know someone who does, just drive down the road that you normally drive and check the difference between that and your guages so you know more accurately how far off it is. Good luck

 

Gps thats something I did not think of, I have been wanting to buy one forever anyways.