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Do you have all the windows down or just the front windows down? I've noticed that when only the front windows and the sunroof are open, the wind can be pretty rough. But when I have everything open, its not bad at all. So now I usually just open the whole thing up and cruise.
 

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YEAHH!!! The aerodynamics suck!!! I really cant drive on the highway with the windows down.. the turbulence is crazy. I guess thats why they put A/C in their. But these are a few of the drawbacks I am coming across slowly but surely.
 

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Picky, Picky. I have never been in a car where you are going 75 - 80 mph where wind does not get in with the windows down.

Find something more serious to gripe about. The car is awsome and worth the MONEY
 

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I've noticed when the drivers side window is opened, I just crack the rear window (driver side) no more than 2-3 inches and the wind problem seems to be somewhat resolved. But to be honest I really dont give a $hit, I love the car way too much to let wind break through my skin.
 

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You guys who think were picky and whiny cruisin at a cool 85mph.... just dont get it.. Im talkin bout 35-40 and it feels like a wind tunnel. Its weird cause others cars Ive owned before didnt have that type of effect.
 

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I haven't experimented too much with the amount of air flow coming into the car at high speeds, but I have noticed that I get some pretty crazy wind effects with the windows open. It's this real fast oscillating pressure change that makes my ears feel like they are going to blow up. It's crazy. Does anyone know what I'm talking about?
 

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Most four-door cars are more prone to interior wind noise/buffeting because the windows are smaller than those in a coupe.
In a four-door car the driver's left ear is actually behind the rear edge of the window (the B-pillar) so all the air coming into the car is coming right at your ear!
If you're going to lower the driver's window, also lower the driver's side rear window 4-5 inches to let the air pressure escape. It'll be much quieter.
Same is true on the passenger's side.
 

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Actually this is good aerodynamic, not bad aerodynamic. A car that has low coefficient of drag, like the IS, will need to have the air flow stay as close to the surface as possible and eliminate separation. This means that the air flow will be extremely close to the car's body. When you open the window, the fluid dynamic of the air will of course change the path of the air and redirect it into your car. This is good.
If you have a car that you cannot even feel the air when you open the window, then you know you have some serious problem with drag.
 

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Originally posted by rarjoon:
YEAHH!!! The aerodynamics suck!!! I really cant drive on the highway with the windows down.. the turbulence is crazy. I guess thats why they put A/C in their. But these are a few of the drawbacks I am coming across slowly but surely.
Nope!!
Its the other way around. The aerodynamics are Awesome on this car. I've not noticed Any wind noise out of the ordinary when front windows are down. At ANY speed.
 

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I love the wind. Makes me feel like I'm driving my convertible.

(gratuitous post to get my # of posts up)
 

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Yo SEANBRADY,

I know exactly what you mean when you're talking about an oscillating effect when the windows are down. Didn't happen in the IS but in the loaner RX300 they gave me and my wife when we took it in for inspection. It feels exactly like your ears are going to explode and it only happens when both rear windows were down. Luckily not tortured by this wierd phenomenon in the IS.
 
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