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Old 08-12-2014, 02:57 PM
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Helicopter noise

So I put a rubicon express 2.5" lift and 35" tires. When driving u know that sound if u only open 1 window in cars or suv's like a helicopter until u open another window. I have that sound all the time... What can I do? I also haven't replaced the rear tire holder.


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Old 08-15-2014, 04:57 PM
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Re: Helicopter noise

Anyone gonna respond... Come on


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Old 08-15-2014, 05:02 PM
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Re: Helicopter noise

I'm following this one. Interested in what folks have to say. Wish I could offer some insight, but I got nothing. 😐
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Old 08-15-2014, 05:05 PM
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Re: Helicopter noise

Thanks...


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Old 08-20-2014, 03:33 PM
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Re: Helicopter noise

From what I've read, it might be your hard top flexing enough to cause the fluctuation in pressure. It happens more with stiff suspension or out of balance tires. I test drove a couple of hardtops that did this. They had been sitting in the Phoenix sun for a while and had flat spots. One was inflated too high and it caused that low speed buffeting. Have someone push up on the hard top while driving to see if it goes away. You can also try lowering the tire pressure a couple of #
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Old 08-27-2014, 03:22 PM
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Re: Helicopter noise

If the noise is coming from outside the Jeep, check to make sure all of your lug nuts are torqued properly.
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Old 08-27-2014, 03:25 PM
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Re: Helicopter noise

Thanks guys


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Old 08-31-2014, 04:55 PM
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Re: Helicopter noise

Sounds to me like the tires you put on it. Did you put a real aggressive tread tire on it after the lift?
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Old 09-05-2014, 06:50 PM
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Re: Helicopter noise

Diezel134, any luck finding the noise?
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Old 01-05-2015, 09:53 PM
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Re: Helicopter noise

Look up Helmholtz resonator
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Old 01-06-2015, 12:37 PM
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Re: Helicopter noise

Quote:
Originally Posted by Diezel134 View Post
So I put a rubicon express 2.5" lift and 35" tires. When driving u know that sound if u only open 1 window in cars or suv's like a helicopter until u open another window. I have that sound all the time... What can I do? I also haven't replaced the rear tire holder.


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Hardtop or soft top? If soft top, it doesn't take much to change air flow and create turbulence. I put a bug shield on and I thought someone was on top with a bat, beating on it. I had to take it off. Air flow is a strange thing. I know everyone says it doesn't matter with a Jeep, it's a just a big ole square brick going down the road. They are wrong, it matters.


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