I've a 2007 unlimited jk. According to the door label It was *
manufactured in feb 2007. It has d44 in the rear and d30 in the front. *
I've 33s with 17in wheels. I have winch with aftermarket bumper and *
spare tire. Dont know the gear ratio that i have. My jeep is lack of *
power.i want to upgrade my gears but dont know what ratio i need. My *
jeep is automatic. I want a good balance between power and mpg. Some *
people recommend 4.88 other 5.13. I think 5.13 is too much for 33. *
Anyway please let me know which way to go. I'm not sure if i will move to 35 in the future. I think 35 is too much for a d30, but not sure.

 

I had 410s in the Rubi...went to 488s--if I had to do it over it would be 513s....

 

35's are okay with a D30, you just need to gusset the axles. It is really expensive to do you gears, if you think you might ever step up to 35's, you will most def want 5.13's with an automatic.