Speedo Drive Gear

[deziped]

Finally, after procrastinating for a year, changed out the drive gear to see if my MPH will read correctly since I changed from 215 to 235-75's. When it read 25 I was doing 26.8 and at 65 I was actually doing about 7l. Will se if the change from a 35 to 34 tooth gear is gonna be close enuf. Will check it against the wifes caddy tomorrow on I-5 since were both going into town . If its within a mile of hers either way at 65 I'll be satisfied. Should help avoid getting speeding tickets I hope.

[comanche87]

i just changed mine to a 33 tooth gear and run 235/75/15 for now. i think i need to go with the 34 tooth. it seems off. here it is. http://gojeep.willyshotrod.com/HowtoSpeedoGears.htm. hope that helps any.

[Eagle]

Finally, after procrastinating for a year, changed out the drive gear to see if my MPH will read correctly since I changed from 215 to 235-75's. When it read 25 I was doing 26.8 and at 65 I was actually doing about 7l. Will se if the change from a 35 to 34 tooth gear is gonna be close enuf. Will check it against the wifes caddy tomorrow on I-5 since were both going into town . If its within a mile of hers either way at 65 I'll be satisfied. Should help avoid getting speeding tickets I hope.

Going from 35 to 34 teeth is only a 2.8% change. That's only going to bring your speedo up from 65 to about 67 MPH. I think you need at least ("at most"?) a 33-tooth gear.

[deziped]

It's possible I might have to go to a 33. It only takes 10 minutes to change it out if needed.