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View Full Version : My Speedometer is off because of bigger tires


Blackjackbender
11-06-2007, 12:40 PM
After putting larger tires your TJ you will notice that your speedo will be off. There is an easy fix to this. Replacing your speedo gears!.

this is a chart that can be used to detirmine what speedo gear you need
http://4x4xplor.com/images/speedo/speedochart00.gif

This has a very helpful writeup for the install of the speedo gear.

http://4x4xplor.com/speedo.html

Evil Queen
11-07-2007, 10:43 AM
sweet...I'm ordering mine today. That looks like something I can handle

Mongo
11-07-2007, 10:51 AM
Very easy swap Pam. Pm if you need a hand.

ladiekilla04
11-07-2007, 12:52 PM
yeah if you get one from quadratec be VERY specific about how many teeth you want, they messed up mine 3 or 4 times and finally i just said screw it and sent it back

Blackjackbender
11-07-2007, 01:31 PM
try the dealer.

Evil Queen
11-08-2007, 07:49 AM
I'll order from the dealer.....and blame it on Ray if it's wrong

Tonka
11-10-2007, 10:43 PM
If someone needs a 36 tooth or a 39 tooth or a 40 tooth, I believe I have those three. I'm looking for a 37 tooth (to make the 39 available)

Beefy
11-13-2007, 11:30 AM
Anyone know how to do it on a Dakota? I dont see it on that particular website... Im sure I can change the gear, just dont know what to order...

Evil Queen
11-13-2007, 11:33 AM
Mine will be in thursday....good luck to me!

Cyco
11-18-2007, 11:14 AM
What about the guys that run 5.38s with 39s? I feel so left out:cry:

Blackjackbender
11-18-2007, 11:27 AM
What about the guys that run 5.38s with 39s? I feel so left out:cry:

:hehe::hehe::hehe::hehe:

Cyco
11-18-2007, 11:28 AM
I think speeding is the least of my concerns in the Jeep anyways.:ha::ha:

Tonka
11-23-2007, 08:16 AM
Anyone know how to do it on a Dakota? I dont see it on that particular website... Im sure I can change the gear, just dont know what to order...

There should be a round tag on the back of your transfer case. It will have the model number.
We can help you further once you get that.

Beefy
11-29-2007, 08:47 AM
Ill get under there next weekend to do the transfer case seal, Ill let ya know what I find out :thumbsup: Thanks

Quagmire
11-30-2007, 01:17 PM
what no gear for 3.07 and 35's:hehe:

demontweeks
04-08-2008, 03:26 PM
Got mine from the dealer back than. Cost not more than 15 bucks I believe

phittie1100
04-08-2008, 07:45 PM
Mine has been on back order at Qtec for over a month now - anyone know if dealerships have them for tooth counts that were not factory setups?

demontweeks
04-10-2008, 12:55 PM
Just specify the year, make, model of your rig and tell them the required tooth needed. I believe you should be able to get all the tooth as specified in the chart. Took them bout 2-3 days to get it in, god know from where. Good luck Paul!

phittie1100
04-10-2008, 02:04 PM
Crashed and burned today - tried the dealer and Unlimited Offroad today, apparently everyone is waiting for Chrysler to make some more. "Backorder" is the word of the day.

kloock959
05-10-2009, 12:06 AM
i know this is a bit more than 15 bucks, but superlift makes a speed calibrator called "truspeed" about $215 but it is infinatly ajdustable and it will adj. all of thoughs that they do not make the right size gear for. Also can set it up for 2 diff. tire sizes