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Topic Review (Newest First)
04-22-2013 07:56 PM
Jwolfer I wish I could just get a gear. Since mine is a Rubi I have to get the speedo healer.
04-22-2013 07:54 PM
Water Dog
Quote:
Originally Posted by Patrick H View Post
I've never used a speedo healer, but it's gotta be pretty easy to be easier than swapping the gear..
I had to go to a Speedo Healer when I put in the Mega Short SYE. After having it, and finding out how simple it is to program and reprogram, I really like it.
04-22-2013 07:42 PM
Patrick H
Quote:
Originally Posted by BLK00TJ View Post
It takes about 3 minutes to change a speedo taking your time. Not worth the cost to me.
That's what I'm saying. I know how long it takes to swap the gear. Now I'm curious about mine, so I think I'll check it .
04-22-2013 07:41 PM
BLK00TJ
Quote:
Originally Posted by Patrick H View Post
The PO of my Jeep put 31's on it (it came with 30's) and knowing what I know about him, he may very well have changed the gear to match the 31's, so I can't be absolutely certain I still have the original gear.
All gears have the tooth count stamped on them. 1/2" wrench, pull it out and take a look. For a 30" tire it would be a 34T gear.
04-22-2013 07:39 PM
BLK00TJ
Quote:
Originally Posted by Patrick H View Post
I've never used a speedo healer, but it's gotta be pretty easy to be easier than swapping the gear..
It takes about 3 minutes to change a speedo taking your time. Not worth the cost to me.
04-22-2013 07:39 PM
Patrick H
Quote:
Originally Posted by Wesboy View Post
X2
I used to run 32's on my 3 speed auto with stock gearing (3.07's).

I was going to change the speedo gear but checked the speedo with a GPS and couldn't tell the difference.
The PO of my Jeep put 31's on it (it came with 30's) and knowing what I know about him, he may very well have changed the gear to match the 31's, so I can't be absolutely certain I still have the original gear.
04-22-2013 07:37 PM
Patrick H I've never used a speedo healer, but it's gotta be pretty easy to be easier than swapping the gear..
04-22-2013 07:35 PM
BLK00TJ
Quote:
Originally Posted by Jaminjer View Post
I just purchased the speedohealer. much easier to use and you can change it anytime you want.
How many speedo gears do you plan on installing on your Jeep to get your return on investment?
04-22-2013 07:32 PM
Jaminjer I just purchased the speedohealer. much easier to use and you can change it anytime you want.
04-22-2013 07:26 PM
4X Junkie
Quote:
Originally Posted by Jerry Bransford View Post
The correct tooth count is 32 for a 32" tire & 3.73. That your tire is 31.6 is right in the ballpark of a typical 32" tire so 32" is the right tire size to use when looking at a speedometer gear chart like the one at Changing Your Jeep Speedometer Gear. Click on that site's chart to make it big enough to read.
This is correct. Tires almost never measure their advertised size. Some brands are worse than others
04-22-2013 07:21 PM
Jerry Bransford
Quote:
Originally Posted by BNotrab View Post
Attachment 239683


1998 Sahara

3.73 Axle Ratio
175MM Rear Axle(D35)

2" Lift
Running 245/75R17 BFG A/T
Overall diameter = 31.6"

What correct speedo gear should I go with? One for a 31" tire or a 32"?
(It's the wife's, never seen the dirt/not going to, hence the 17"s)
Thanks for the help!
The correct tooth count is 32 for a 32" tire & 3.73. That your tire is 31.6 is right in the ballpark of a typical 32" tire so 32" is the right tire size to use when looking at a speedometer gear chart like the one at Changing Your Jeep Speedometer Gear. Click on that site's chart to make it big enough to read.
04-22-2013 07:15 PM
Jeffreybomb

Check this thread for more information.

Edit to add: misread your original question, but figured I'd leave this up here anyway just in case.
04-22-2013 06:38 PM
Wesboy
Quote:
Originally Posted by Patrick H View Post
Are you certain the speedometer is incorrect? I ask, because I'm running 32" tires on mine with 3.73's, 5sp., and my speedometer is dead on with the stock speedo gear.
X2
I used to run 32's on my 3 speed auto with stock gearing (3.07's).

I was going to change the speedo gear but checked the speedo with a GPS and couldn't tell the difference.
04-22-2013 05:54 PM
BLK00TJ If it were my wife, I'd put one in that made her think she was going faster than she really is. So I'd go with a 31T that is for 33" and 3.73.
04-22-2013 04:50 PM
Patrick H Are you certain the speedometer is incorrect? I ask, because I'm running 32" tires on mine with 3.73's, 5sp., and my speedometer is dead on with the stock speedo gear.
04-22-2013 04:47 PM
BNotrab
Correct Speedo Gear

Attachment 239683


1998 Sahara

3.73 Axle Ratio
175MM Rear Axle(D35)

2" Lift
Running 245/75R17 BFG A/T
Overall diameter = 31.6"

What correct speedo gear should I go with? One for a 31" tire or a 32"?
(It's the wife's, never seen the dirt/not going to, hence the 17"s)
Thanks for the help!

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