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Topic Review (Newest First)
12-07-2009 06:04 PM
MikeMikeMotorbike
Revisions Made.....

I'm a newby looking for info.
I'm looking for input , but generally accepted knowledge not "well I run this and its fine "......

Let me know if this is close......


This is a general rule of thumb list for those looking for basic Tire vs lift info.
On Jeeps used for general DD and regular offroad use..

30" tires and under
Stock OK
Lockers OK

31" Tires
May get some tire rub while turning , Add washers to bump stops as needed.
Stock suspension OK , may rub (You can trim the plastic fender extensions.)
Or a Budget Boost lift (2"front 1" back) all the way up two up to a 3" lift.
A front lunchbox locker is a good option on Dana 30 ( Lunchbox = uses existing differential carrier housing.)
BUT a rear Locker may or may not be OK on Dana 35 ... Debatable .... Juries out ...

Most TJs have Dana 30 front Dana 35 rear.
( NOTE Rubicons have Dana 44 front rear with selectable lockers and SYE .)


33" Tires
Stock suspension with flat tube fender kit.
OR 2.5" to 4" lift .
Getting into tire rubbing may need wheel spacers or offset rims or bump stop mod.
Drive shaft work needed for any lift over 3" and SYE = ( Slip Yoke Eliminator) (Rubicons have SYE stock).
Because of steering geometry issues your getting into Tie rod , Drag Link , Track bar upgrades.
Adjustable short arm upgrade is a good idea. Again for steering and for strength .
A front locker is still a good option.
At this point rear Lockers are Probably a bad Idea , may need to upgrade axles.
Re-gearing is almost mandatory .

35" Tires
???"lift with flat fenders
A 4.5" lift may need fender trim
Or 5" to 6" lift .
Now you NEED Drive shafts , SYE , Brake upgrade , Brake lines , Long arm kit , Tie rod , Drag Link , Track bar upgrades.
I'm not sure about front lockers on Dana 30 with 35" tires.???
Defiantly NO lockers on the Dana 35 with 35"tires

Any thing above 35" tires is hard core land and you should have enough experience to know what you need or Don't do it....
12-06-2009 06:22 PM
Twozerofd ahhh my bad i thought you were referring that lockers were bad regardless of the axle....its been a long week im runnin low on sleep
12-06-2009 06:15 PM
MikeMikeMotorbike They say the rear Dana 35 will break the front Dana 30 is OK though.
Some say even the 31" tires are to big for a Dana 35 with lockers..

Rubicon's Have a Dana 44 ... they are OK.

They say the Dana 44 front is just a modified Dana 30 butt still its ok for lockers.....
12-06-2009 06:00 PM
Twozerofd Just outta curiosity, why would Lockers on 33'' or 35'' tires be a bad idea?
12-06-2009 05:49 PM
MikeMikeMotorbike
New Sticky thread Idea ,, Tire / Lift Basic FAQs

I sorta started this on another Forum butt I thought I'd share.

I don't know anything I'm a newb.
This is about a months reading magz and forums ...... so.
If you have any thing to ad ... Please .

I'm looking for known general rules of thumb , not well I did this and its fine.


30" tires and under
Stock OK
Lockers OK

31" Tires
Stock OK may rub You can trim the plastic fender extensions
or up to a 3" lift
Lunch box maybe OK

33" Tires
Stock with flat fenders
OR 2.5" to 4" lift
Getting into tire rubbing may need wheel spacers or offset rims or bump stop mod.
Drive shaft work needed for anything over 3"Lift and Slip Yoke Eliminator SYE
Getting into steering link upgrade land.
Adjustable short arm upgrade is a good idea
At this point Lockers are Probably a bad Idea

35" Tires
???"lift with flat fenders
4.5" lift may need fender trim
Or 5 to 6" lift
Now you need Drive shafts , SYE , Brake upgrade , Long arm kit
Defiantly NO lockers
The limit of this axle , should go to a D44 or 8.8 or better

Any thing above 35" tires is hard core land and you should have enough experience to know what you need or Don't do it....

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