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E90/E91/E92/E93 (2006 - 2013)
The E9X is the 4th evolution of the BMW 3 series including a highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! -- View the E9X Wiki

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  #1  
Old 12-12-2006, 08:35 PM
WalterMiddy WalterMiddy is offline
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Top speed of 335i without an electronic limiter?

What's the top speed possible of a 335i without the electronic limiter?
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  #2  
Old 12-12-2006, 09:13 PM
Timereaper Timereaper is offline
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335i

7000RPM REDLINE
1st: 42MPH 67km/h
2nd: 70MPH 112km/h
3rd: 107MPH 171km/h
4th: 142MPH 227km/h
5th: 169MPH 270km/h
6th: 194 MPH 310km/h
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  #3  
Old 12-12-2006, 09:20 PM
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seccsc seccsc is offline
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Quote:
Originally Posted by Timereaper View Post
335i

7000RPM REDLINE
6th: 194 MPH 310km/h
Oh Ya!
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  #4  
Old 12-12-2006, 09:23 PM
wolf wolf is offline
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actually...its 88mph...but..with the flux capacitor [/SIZE]
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  #5  
Old 12-12-2006, 09:35 PM
WalterMiddy WalterMiddy is offline
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Quote:
Originally Posted by Timereaper View Post
335i

7000RPM REDLINE
1st: 42MPH 67km/h
2nd: 70MPH 112km/h
3rd: 107MPH 171km/h
4th: 142MPH 227km/h
5th: 169MPH 270km/h
6th: 194 MPH 310km/h
Wholly Sheet, dude! Details please, details! Where and with what modifications.
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  #6  
Old 12-12-2006, 09:46 PM
vase330 vase330 is offline
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Ever heard of drag limited????

Have you ever heard of drag limited?? 194 MPH no easy feat. I doubt it can touch 180 MPH tops. Simple physics really, you have to actually test it to know. You see its not a linear expirience. As you go faster and faster, the drag effect multiplies not so linearly, but more quadratically the graphical line swings up ever more vertically. That said, if you graph it using the lower speeds, you see you need an M6 for that feat. If you look at real tested M6 behaviour and overlay that on a 335i, you see what I mean clearly. And thats not saying anything of the fact the drag co-effienct on an M6 is much better than on the more upright 335i. Damn physics, can't quite cheat it. You need more like 450 - 500 lbs to get up there in a 335i.
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  #7  
Old 12-12-2006, 09:57 PM
335obsessed 335obsessed is offline
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Quote:
Originally Posted by Timereaper View Post
335i

7000RPM REDLINE
1st: 42MPH 67km/h
2nd: 70MPH 112km/h
3rd: 107MPH 171km/h
4th: 142MPH 227km/h
5th: 169MPH 270km/h
6th: 194 MPH 310km/h
Isn't the redline 7500? I could go to the garage and look, but it's late.

It would be interesting to see how what the top end would be without the limiter. Certainly the aerodynamics are likely more a determinant than just the gearing. That resistance builds quick at speed.

If you jump out of a plane - you reach the 120mph terminal velocity in only 13 seconds. After that time, it's too much air resistance.

I remember a 400hp corvette topping out at 186 - and the Z06 (505hp/470torque?) doesn't quite get 200mph.

My guess is the 335 would top out at 175. I'm sure the boys at BMW know.

Are the Euro versions limited electronically, too?
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  #8  
Old 12-12-2006, 10:13 PM
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My E46 Supercharged 330i with pull will 175 with no problem and that's with a 3.38 Differential in it. I don't see it going any where north of 180. I can tell you though that after 160 Dynamics play a very important role.
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  #9  
Old 12-12-2006, 10:19 PM
335obsessed 335obsessed is offline
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I guess the other question is how far off would the BMW speedometer be at those speeds? 10mph too fast?
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  #10  
Old 12-12-2006, 10:23 PM
WalterMiddy WalterMiddy is offline
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I would love to hear more from the maniacs that have actually removed the speed limiter and not only how fast, but how stable the car felt at top speeds.
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  #11  
Old 12-12-2006, 10:26 PM
WalterMiddy WalterMiddy is offline
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Quote:
Originally Posted by 335obsessed View Post
I guess the other question is how far off would the BMW speedometer be at those speeds? 10mph too fast?
I've read that BMW likes to "enhance" speedodmeter readings...I have no idea if that is true or not. That would explain why driving 90 mph in my 330i feels like 70
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  #12  
Old 12-12-2006, 10:34 PM
335obsessed 335obsessed is offline
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I had check my speedometer against my Garmin - the Garmin said 96 and the speedometer read 100 on cruise control.
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  #13  
Old 12-12-2006, 10:39 PM
WalterMiddy WalterMiddy is offline
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Quote:
Originally Posted by 335obsessed View Post
I had check my speedometer against my Garmin - the Garmin said 96 and the speedometer read 100 on cruise control.
I don't know if I would trust the GPS reading....hmmmm. Is it trustworthy?
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  #14  
Old 12-12-2006, 11:21 PM
n1smo n1smo is offline
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The E46 M3 can get up to 170mph so the 335 should be able to at least reach that speed. I don't know the other factors involved such as the extra weight, and Cd. The E46 has a higher drag Cd than the E90 correct?
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  #15  
Old 12-13-2006, 12:01 AM
RyanN RyanN is offline
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The guy that mentioned redlines speeds up above mentioned the redline speeds of the manual. According to the BMW website information (tire radius and gear ratios), these are the speeds for the automatic (in MPH, at a 7000RPM redline):

1st: 36
2nd: 64
3rd: 99
4th: 132
5th: 173
6th: 218

Those are hypothetical, of course, and it couldn't come close to reaching it's top in 6th. The auto is higher because it has a longer final drive ratio and shorter final gear. This also means that an automatic is ticking at just under 5000RPM at 155MPH, where the manual hits 5000RPM at 139MPH in 6th gear.

Extrapolating from that, that could mean that the manual theoretically accelerates quicker through much of the band because of closer gearing, and that it may have a higher top speed because of a more favorable power:gear ratio (assuming very comfortably that the drag-limited top speed is below the 194MPH redline of the manual). But it could also mean that, because the auto runs at a lower RPM in it's final gear, there are instances that it could have lower fuel consumption at a given speed.

This is all just my understanding, of course, so YMMV.

~Ryan

Last edited by RyanN; 12-13-2006 at 12:04 AM.
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  #16  
Old 12-13-2006, 05:18 AM
Timereaper Timereaper is offline
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Quote:
Originally Posted by RyanN View Post
The guy that mentioned redlines speeds up above mentioned the redline speeds of the manual. According to the BMW website information (tire radius and gear ratios), these are the speeds for the automatic (in MPH, at a 7000RPM redline):

1st: 36
2nd: 64
3rd: 99
4th: 132
5th: 173
6th: 218

Those are hypothetical, of course, and it couldn't come close to reaching it's top in 6th. The auto is higher because it has a longer final drive ratio and shorter final gear. This also means that an automatic is ticking at just under 5000RPM at 155MPH, where the manual hits 5000RPM at 139MPH in 6th gear.

Extrapolating from that, that could mean that the manual theoretically accelerates quicker through much of the band because of closer gearing, and that it may have a higher top speed because of a more favorable power:gear ratio (assuming very comfortably that the drag-limited top speed is below the 194MPH redline of the manual). But it could also mean that, because the auto runs at a lower RPM in it's final gear, there are instances that it could have lower fuel consumption at a given speed.

This is all just my understanding, of course, so YMMV.

~Ryan

The speeds I posted is something I read from a previous bimmerfest forum post and saved, yet I do not remember the member who did it. But I still remember them saying they used a spread sheet with the gear ratios in mind to end up calculating those end speeds in a theoretical point of view, and mathematically correct way with ratios.
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  #17  
Old 12-13-2006, 07:46 AM
DeLaSalle DeLaSalle is offline
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Quote:
Originally Posted by Timereaper View Post
335i

7000RPM REDLINE
1st: 42MPH 67km/h
2nd: 70MPH 112km/h
3rd: 107MPH 171km/h
4th: 142MPH 227km/h
5th: 169MPH 270km/h
6th: 194 MPH 310km/h
God Have Mercy...
I was right on!
Yikes!
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  #18  
Old 12-13-2006, 07:49 AM
DeLaSalle DeLaSalle is offline
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Quote:
Originally Posted by Timereaper View Post
The speeds I posted is something I read from a previous bimmerfest forum post and saved, yet I do not remember the member who did it. But I still remember them saying they used a spread sheet with the gear ratios in mind to end up calculating those end speeds in a theoretical point of view, and mathematically correct way with ratios.
218mph !!!
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  #19  
Old 12-13-2006, 08:07 AM
fbazakos fbazakos is offline
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From my European Delivery experience last week, it ran right up to 155 (actually, it seemed to indicate 152 or 153) and the stopped like a brick wall. I remember the revs being over 5000, but I didn't look down that much.
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  #20  
Old 12-13-2006, 08:24 AM
adc adc is offline
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Quote:
Originally Posted by DeLaSalle View Post
218mph !!!
It is not quite clear to me if you understood that this is a THEORETICAL !!! speed based on gear ratios, nothing more.

Without the top speed limiter, the 335 will never reach 218mph, probably not even in free fall.

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  #21  
Old 12-13-2006, 09:10 AM
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Vornado Vornado is offline
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i love how all the 335 fanbois talk about it like its some sort of Ferrari.

BMW limits their high-end autos to 155mph in the US of A for a reason. It's unlikely that anyone will ever find a place go that fast, unless you are in the desert somewhere, or are just a plain maniac who wants to open up in the city, and if you do, 155+ is fast as sh1t. You can talk about 150, 160, 180, whatever all you want to, but has anyone here actually even gone that fast? I've gone 155, damn near 160 in a saleen, and thats as fast as I care to go. Why would you want to go faster?
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  #22  
Old 12-13-2006, 09:19 AM
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Eh.. we've been to the moon.. why do we need to go to Mars...?

The answer is always the same..because we are human.
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  #23  
Old 12-13-2006, 09:42 AM
Timereaper Timereaper is offline
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Since we're human, there is no such thing as too much power. You own a 160hp car and think 200 would be plenty fast. Then you have that, but you feel it's not enough when you're gunning it. Fact is, you can never have enough or be like that movie "Too fast, too furious" as the quicker it is, the more thrill that is involved.

Besides, saying you can do faster, or do more than the other guy gives you bragging rights
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  #24  
Old 12-13-2006, 10:00 AM
335i Driver 335i Driver is offline
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First of all, according to one magazine that 155mph indicated top speed is only and actual 135 measured by radar. That tells just how accurate, or inaccurate, the speedo is.

Second, a 300hp car with a CD of .3 might pull 160-165 on a good day, but no better.
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  #25  
Old 12-13-2006, 10:17 AM
BGBMW BGBMW is offline
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Here it goes - opinion from a practicing engineer - from a world where nothing is black and white, only a large bandwidth of a shade of gray:

Folks, to simplify the matter down to the fundamentals, we need to consider two crucial dynamic parameters:

1. Drag - as someone mentioned above, it is not linear, and it will most likely limit the top speed to no more than 170mph.
2. Vehicle dynamics - the car is NOT DESIGNED to go much faster than 160 mph. Multiple limiting factors impact dynamic stability of vehicles at high speeds, including ours -no doubt much better than your average Chevy but nonetheless a car. The drag will not only provide a blocking counter force, but also act to destabilize the car through both dynamic pressure and subsequent airflow. For lack of a better explanation, things get funky at those speeds. Suspension becomes unable to deal effectively with surface undulations, which subsequently interacts and magnifies aero-dynamically induced issues. Less than optimal airflow and resulting flutter act to destabilize the body of the vehicle. Should the car encounter a severe road undulation, it is likely prone to loose optimal contact or depart from the surface all together. Even if this is momentary, the side affects could be devastating.
Not to mention tires - they are not designed for such extreme applications, no matter what the specs tell us. There is a reason why super cars use "super" tires.

So, the only way we would know how fast our cars are is to test them in a closed facility under controlled circumstances, including temperature, altitude, road and wind conditions. Only then would we have an idea of how fast they really are!

I highly suggest that NO ONE tries going much faster than 155 mph under normal street conditions - not on desert roads, autobahn or elsewhere. 155 is plenty fast, too fast in my professional (including racing) opinion.
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