Default Death wobble 

Old 01-14-2013, 08:22 PM   #1
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So I got 5 brand new iroks on my 7 when I bought it but I didn't want to ruin them on the road so I bout a set of used 38x15.15x15 on 15x14 steel wheels. Jeep drove like a brand new jeep with the iroks, I put the others on and I can't break 30mph they have no balancing weights on them and I'm assuming that is the issue but its Pretty violent. Can out of balance wheels and tires cause this big of an issue? Could the wheels be warped? They appear to be good but may have an issue that I can't see?

 

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Old 01-14-2013, 08:58 PM   #2
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Yes, yes, and it's hard to say. It is pretty difficult to get 38's balanced speaking from the guy who mounted tires for a time. That's a lot of rubber to make roll straight! Not saying it can't be done, but try and stay away from the chain stores only from lack of experience in the hands that work there.

It takes time to get some of those mud grips balanced well and doing it properly might mean unbeading a tire and rotating the rim. If there are any questions, just have them spin the rims without tires and see if they are off and mark accordingly. Mount a tire and give it a spin. If it is off a lot, try and move the tire on the rim to compensate for the difference.

This is for hiway tires, big behind mudders just walk sometimes, that's why they aren't called highway tires! Can't tell how bad they are off when you are throwing rooster tails off the back!


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Default Re: Death wobble 

Old 01-14-2013, 08:59 PM   #3
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Quote:
Originally Posted by Jeep guy View Post
Can out of balance wheels and tires cause this big of an issue?
Yes, definitely. That sounds like the most likely cause since it runs good with the other tires.

Quote:
Originally Posted by Jeep guy View Post
Could the wheels be warped?
It's possible. Have your wheels balanced and they can also check for damage. Usually the damage is obvious.
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Default Re: Death wobble 

Old 01-14-2013, 09:07 PM   #4
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and if they are older super swampers they can take alot of weight to even make them half way drivable.
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Default Re: Death wobble 

Old 01-14-2013, 09:12 PM   #5
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I don't think a 38x15.15 on 14" wide wheel was ever ment to go down a paved road at 50mph just crawling around off road. IMO
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Old 01-14-2013, 09:33 PM   #6
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Originally Posted by mtnwhlr View Post
I don't think a 38x15.15 on 14" wide wheel was ever ment to go down a paved road at 50mph just crawling around off road. IMO
Agreed!


This won't be too expensive Dear! That's what I keep saying. Over and over again.

 

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Old 01-15-2013, 10:39 AM   #7
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I don't think a 38x15.15 on 14" wide wheel was ever ment to go down a paved road at 50mph just crawling around off road. IMO
That's what I thought to but I saw them being ran on a 2005 z71 for a long time before I bought them so I thought they may be ok if they will I have no clue. But am taking them to a custom shop that specializes in large tire work they claim they can do it.

 

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Default Re: Death wobble 

Old 01-16-2013, 12:42 AM   #8
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that 2005 z71 has a lot more weight. so the suspension absorbs the vibration via deflection. as opposed to the much lighter cj which doesn't deflection merely transfers to your seat.
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Default Re: Death wobble 

Old 01-23-2013, 11:13 AM   #9
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with every set of tires we mounted on jeeps and off road vehicles, we had them Tru'd first.. they spin them and using some sort of blade, make them round.. contrary to tire makers, tires are NOT round.. then after they are Tru'd up, we balanced them (spin)..

 

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Default Re: Death wobble 

Old 04-25-2013, 01:40 PM   #10
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Think I am feeling the beginning of the death wobble ,could steering box play be part of cause? I have a little free play.Running 32x10.5's

 

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