i have an 05 and put the gear in. only 20 bucks rather than 70 for the dealership to do whatever.
Rubi's are fixed via the computer.
TJ's use a gear.
Rubis are TJs.... 
Would the computer even take the change? I nkow most are preprogrammed with certain sizes and outside those parameters the sizes would be rejected as the new tire size.
Rubicons have a photoelectric VSS as opposed to the sppedo gear setup in the NP231 t/c. Rubicons use the TruSpeed calibration kit which is a ECU addon. As long as your TJ isn't a Rubicon, then you just need the gear
Thanks for the info...
On Quadratec, there are 3 gears... different tooth count. I did notice it says not for Rubicons, so the above info must be correct 
Doesn't sound too hard... will try this one myself...
There is a conversion chart for which one to use here:
http://www.quadratec.com/jeep_knowledgebase/article-46.htm
31 tooth
http://www.quadratec.com/products/55200_31.htm[/url]
33 tooth
http://www.quadratec.com/products/55200_33.htm
36 tooth
http://www.quadratec.com/products/55200_36.htm
???Question... seem to be getting competing oppinions...
I have 33's on my TJ now and I'm about 5mph off... The dealer said it is fixed via computer adjustment, but I see speedo gears on sale for an 06 also...
The guy at the dealership sounded like a tool, so I'm not sure the real deal... Anyone have an 2006 and had the speedo fixed?
If your original tire size was 30 then your actual difference is 1.103% so your speed is not 5mph at all times so at 10mph you are going aprox. 11 but at 60 you will be going aprox. 67.
I am a Q-tec representative and I'm telling you to not go by that. There's a simple formula to go by. Divide you' re anticipated tire size by the stock tire size then multiply by the current ring and pinion gear.. That equals the gearinging you should go by, then choose the speedo gear that is supplied by Raingler.com. They got their s***together.
Anticipated tire size X Stock gears = gears you should be running
________________
Stock tire size
I'm sorry for any confusion, I'm rather drunk right now...
And if you just want to know how fast you are going this will help. It will also help when figuring out gas mileage.
Don’t have an account yet? Register yourself now and be a part of our community!
