Larger tires on my TJ

Hi all,
I am thinking of putting 33's on my TJ (right now it has 31's) and someone told me that I would have to put in new gears. Is that true? What new gears do I need and how much do they run? Can I put them in? or do I have to hire someone?

Thanks.

p.s. Anyone know if there is a better place to purchase my tires besides Discount?

Depends on what your factory gears are. You got a 4.0L or the 2.5L? Auto or standard tranny?

4.0L Standard 6 cylinder

Mine's an auto 4.0 6cyl. According to the PO who lifted it, still running factory gears. NP on 33 ATZs.

TheBigOnion wrote:

someone told me that I would have to put in new gears. Is that true?

No. You don't have to. It may be desirable, though, depending on what you're running now. Do you know what it is? See here if not:

FAQ - How do I determine my gear ratio?

Also, you didn't say whether it was a manual or automatic transmission.

TheBigOnion wrote:

4.0L Standard 6 cylinder

Standard = manual

jdldx3 wrote:

TheBigOnion wrote:

4.0L Standard 6 cylinder

Standard = manual

lol, thanks

btw, I don't know what it's running. But right now I have 31's on there and when I'm in the hills, the Jeep has a hard time getting up to speed.

Probably 3.07's. You have a D30 in front and a D35 in the back right? I have a full case LSD for the rear and an open front with 3.73's you can have if you want. You'll need to get someone to install them though. You may want to go deeper though. I think 4.56 would be the proper gearing for you with 33's. Talk about a night and day difference from your 3.07's...