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Unread 11-24-2012, 12:24 AM   #1
ironbyron1
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2.5 or 4" lift kit?

I keep going back and forth on this. I like the idea of being able to go up to 33" tires with the 4" lift. But I wonder about stability issues. I plan to add wheel spacers if I do the 4".
Anyhow, you tell me, 2.5 or 4"?

Thanks!

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Unread 11-24-2012, 05:21 AM   #2
keith460
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Put it this way, I had a 4"- 4.5" lift kit and 33" tires and between a stiff harsh ride and slight driveshaft vibrati0ons, it wasn't worth it. Now we installed a 3" spring lift with 32" tires and it is not harsh ride and no vibrations at all. A 3" lift will still clear 33" tires and so will a 2.5" lift kit. But if you plan on doing some hardcore offroading, then perhaps a 1" body lift would be needed with a 2.5" spring lift.
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Unread 11-24-2012, 05:39 AM   #3
Matt1981CJ7
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I agree with Keith. Anything over 3" results in steering, drivetrain and ride quality issues that will need to be addressed.

When I weighed the extra work, and $$, all for a 1" larger tire (32" vs. 33"), it wasn't worth it to me. I stuck with a 2.5" lift and 32"x 11.5" tires, stock steering and drivetrain.

Matt
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Unread 11-24-2012, 05:40 AM   #4
wvrefugee
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2" at best! This is also a great/cheaper way to upgrade your suspension without buying leafs seperately. I recently used a 2.5" BDS system and love it!
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Unread 11-24-2012, 06:04 AM   #5
gojeepin
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Quote:
Originally Posted by keith460 View Post
Put it this way, I had a 4"- 4.5" lift kit and 33" tires and between a stiff harsh ride and slight driveshaft vibrati0ons, it wasn't worth it. Now we installed a 3" spring lift with 32" tires and it is not harsh ride and no vibrations at all. A 3" lift will still clear 33" tires and so will a 2.5" lift kit. But if you plan on doing some hardcore offroading, then perhaps a 1" body lift would be needed with a 2.5" spring lift.
Quote:
Originally Posted by Matt1981CJ7 View Post
I agree with Keith. Anything over 3" results in steering, drivetrain and ride quality issues that will need to be addressed.

When I weighed the extra work, and $$, all for a 1" larger tire (32" vs. 33"), it wasn't worth it to me. I stuck with a 2.5" lift and 32"x 11.5" tires, stock steering and drivetrain.

Matt
Any issue you see above can be addressed. I have a 4.5" suspension and 1" body lift to run 35s. I fixed all the problems myself.

In addition, just staying below 4" lift may not avoid those problems. It depends on the design of the lift.

The question is, do you want to and will you do most of the work yourself? If you don't want to deal with those issues, go with a 2.5" lift.
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Vibration? Bump steer? Wandering? Read: Steering, suspension, and driveline basics. An article on how it works and where to look for problems.

83 CJ7, 4.1L 6cyl (4.0L bored .030" over), 35" tires, T-5 transmission, Dana 300 TC, Trussed AMC 20.
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Unread 11-24-2012, 03:34 PM   #6
wvrefugee
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AND, a 2.5" lift makes an easier ride from Moonlite BBQ!!
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Unread 11-24-2012, 03:34 PM   #7
ironbyron1
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Quote:
Originally Posted by gojeepin View Post
Any issue you see above can be addressed. I have a 4.5" suspension and 1" body lift to run 35s. I fixed all the problems myself.

In addition, just staying below 4" lift may not avoid those problems. It depends on the design of the lift.

The question is, do you want to and will you do most of the work yourself? If you don't want to deal with those issues, go with a 2.5" lift.
What problems did you have to fix, if you don't mind letting me know?

Thanks,
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Unread 11-24-2012, 03:37 PM   #8
ironbyron1
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Originally Posted by wvrefugee View Post
AND, a 2.5" lift makes an easier ride from Moonlite BBQ!!
Down Parrish Avenue?
Where the meat's good and lean?
You'll see what I mean,
The made Owensboro, the BBQ Capitol of the world!

LOL!
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Unread 11-24-2012, 05:27 PM   #9
CJ8Hokie
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I have a 4" lift (Pro Comp *$@#!!!!) and wish I had a 2.5" lift. From the looks of things I could still easily fit my 33" AT's as it's mainly a pavement pounder.
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Unread 11-24-2012, 06:30 PM   #10
b-dog
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i would like to put a 2.5" ome on my cj7 and run some 33" a/t tires with 10" wheels. lot of people say that they will rub. some say they want. i don't do any off roading with mine either.
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Unread 11-24-2012, 08:32 PM   #11
wvrefugee
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Bbq

Quote:
Originally Posted by ironbyron1 View Post
Down Parrish Avenue?
Where the meat's good and lean?
You'll see what I mean,
The made Owensboro, the BBQ Capitol of the world!

LOL!
Been there many times my friend! Lived in Loserville for 18 years!
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Unread 11-24-2012, 08:32 PM   #12
wvrefugee
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Spacers

Quote:
Originally Posted by b-dog View Post
i would like to put a 2.5" ome on my cj7 and run some 33" a/t tires with 10" wheels. lot of people say that they will rub. some say they want. i don't do any off roading with mine either.
1.5" spacers have been fine for me.
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Unread 11-25-2012, 05:01 AM   #13
Matt1981CJ7
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Quote:
Originally Posted by b-dog View Post
i would like to put a 2.5" ome on my cj7 and run some 33" a/t tires with 10" wheels. lot of people say that they will rub. some say they want. i don't do any off roading with mine either.
b-dog,

Here's my 2.5" OME lift with a new 32"x11.50" tire fully tucked. Stock hangers and body mounts.

I'm afraid 33"'s would rub, without some additional lift.

Hope this helps,

Matt
tiretuck1.jpg   tiretuck4.jpg   tiretuck5.jpg  
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Unread 11-25-2012, 06:00 AM   #14
gojeepin
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Quote:
Originally Posted by ironbyron1 View Post
What problems did you have to fix, if you don't mind letting me know?

Thanks,
1) Driveline angle. I fixed it with remounting the perches and using a Double Cardin driveshaft.
2) Caster Angle. I fixed it by measuring, marking, and grinding the new angle into the base of the perches. Dana 30 perches are thick and can be reshaped within reason.
caster-grinding-dana-30-perch.jpg  
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Vibration? Bump steer? Wandering? Read: Steering, suspension, and driveline basics. An article on how it works and where to look for problems.

83 CJ7, 4.1L 6cyl (4.0L bored .030" over), 35" tires, T-5 transmission, Dana 300 TC, Trussed AMC 20.
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Unread 11-25-2012, 08:23 AM   #15
Alex77cj7
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I have a 4" with 33" tires and I love it! I'm about to change to 35's though.. I was running 33's stock with a little rubbing so i know you could run them with no problem on a 2.5"
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