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F30 / F31 / F32 / F33 (2012 - current)
The sixth generation 3 series, chassis code F30. 2013 model year 328i and 335i sedans now in production. Read the F30 frequently asked question thread for all your basic question and dive into all the details in the ultimate F30 information thread.

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  #1  
Old 07-24-2013, 03:43 PM
t335xi t335xi is offline
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F30 faster than M3 at 5k+ ft elevation?

Will our turbo charged 335xi's be faster than an M3 given the amount of power lost at altitude, in Colorado and other mountain states?

Im at 6k feet or above most of the time.

Just curious
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  #2  
Old 07-24-2013, 03:49 PM
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WillInDenver WillInDenver is offline
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Originally Posted by t335xi View Post
Im at 6k feet or above most of the time.
Me too (Castle Pines).

I did a little research on this a few years ago. There are several variables involved, including temperature and barometric pressure, but I learned that when making reasonable assumptions, naturally aspirated cars make about 85% of the power at our altitude that they make at sea level. Turbocharged cars do lose some power, but I recall it being only 5% or so using similar assumptions.

So based on that simple math, the M3 is still making more power than a 335 in Denver. At the Eisenhower tunnel, probably not.

EDIT: I did this research because the nominal power between my '05 545 and the 535 that came later is much closer; an E60 535 is almost certainly faster at this altitude than my car is. I like it anyway. I did recenty drive a new F10 550. Holy crap.
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Last edited by WillInDenver; 07-24-2013 at 03:56 PM.
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  #3  
Old 07-24-2013, 04:50 PM
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MMME30W MMME30W is online now
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Originally Posted by t335xi View Post
Will our turbo charged 335xi's be faster than an M3 given the amount of power lost at altitude, in Colorado and other mountain states?

Im at 6k feet or above most of the time.

Just curious
Hahahaha.

You are kidding, yes?
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  #4  
Old 07-24-2013, 06:04 PM
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The Nerd The Nerd is offline
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F30 faster than M3 at 5k+ ft elevation?

Quote:
Originally Posted by WJGreer View Post
Me too (Castle Pines).

I did a little research on this a few years ago. There are several variables involved, including temperature and barometric pressure, but I learned that when making reasonable assumptions, naturally aspirated cars make about 85% of the power at our altitude that they make at sea level. Turbocharged cars do lose some power, but I recall it being only 5% or so using similar assumptions.

So based on that simple math, the M3 is still making more power than a 335 in Denver. At the Eisenhower tunnel, probably not.

EDIT: I did this research because the nominal power between my '05 545 and the 535 that came later is much closer; an E60 535 is almost certainly faster at this altitude than my car is. I like it anyway. I did recenty drive a new F10 550. Holy crap.
Slightly off topic WJGreer....but I just traded my 05 545i in on a new 335i (w/PPK). That V8 in the 545 was a great engine. The new F10 550 felt like night and day?


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Old 07-24-2013, 08:21 PM
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WillInDenver WillInDenver is offline
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Originally Posted by The Nerd View Post
The new F10 550 felt like night and day?
Not night and day probably, because the 545 is a pretty fast car. But there was absolutely another level of power there with the 550. For me, it was 75 more horsepower (or whatever) plus turbocharging, which meant I was feeling it more. Hell of an engine. Too bad I have no appetite to spend $80K on a car right now.
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