Strange noise while accelerating past 100MPH
Registered User
Joined: Jun 2009
Posts: 2,190
From: Benton County, AR
Rep Power: 147
If you are sure the front trunk lid is down like I mentioned in an earlier post then I'd check the side windows.
It could be one is not adjusted right and air is escaping from inside the cabin past a tiny gap in the side window and seal.
You might be able to sort of confirm this by having the cabin vent fan on high or totally off.
Or having a passenger with a suction cup on a stick pull the glass in or push it out some when the noise is present.
You have to be careful of course as you are driving quite fast and you have to focus on your driving.
If you think mirrors then fold the mirrors and take a run and see if that makes a difference.
It could be one is not adjusted right and air is escaping from inside the cabin past a tiny gap in the side window and seal.
You might be able to sort of confirm this by having the cabin vent fan on high or totally off.
Or having a passenger with a suction cup on a stick pull the glass in or push it out some when the noise is present.
You have to be careful of course as you are driving quite fast and you have to focus on your driving.
If you think mirrors then fold the mirrors and take a run and see if that makes a difference.
Registered User
Joined: Sep 2013
Posts: 13
From: Hamilton, ON
Rep Power: 0
Stop it. 
I took out the three pieces in the frunk around the battery.
Will check the window seals, will have to try a run with windows open.
Thanks.
I took out the three pieces in the frunk around the battery.
Will check the window seals, will have to try a run with windows open.
Thanks.
Thread Starter
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Registered User
Joined: Sep 2013
Posts: 1,117
From: North NJ
Rep Power: 173
I recently had my windshield replaced due to a crack. The noise went away after that, I've now taken the car above 140mph several times with no noise.
Registered User
Joined: Mar 2011
Posts: 107
From: Orange County CA
Rep Power: 33
Mine was also windshield. Get inside car, windows up and put blue racers tape along all side window seals. If you still have the noise, probably windshield. I had shop redo windshield install twice and still is not perfect but way much better han it was.
Registered User
Joined: Apr 2012
Posts: 2,095
From: Clemson, SC
Rep Power: 135
Coilovers like on the GT3 bind up with steering inputs. The Bilsteins B16s are notorious for doing this. The solution is to install a thrust bearing on the lower spring perch so that the coil can actually twist a bit instead of binding up and then releasing. I imagine this is worse when things get hot as the spring expands a bit due to temperature which makes the binding even worse.
Make sure you check your adjustable drop link ends to confirm they're all tight as a loose one can make a similar noise.
Make sure you check your adjustable drop link ends to confirm they're all tight as a loose one can make a similar noise.
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