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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > M Series > E90/E92/E93 M3 (2008 - 2014)

E90/E92/E93 M3 (2008 - 2014)
4th generation E90 M3 sedan, E92 M3 coupe and E93 M3 convertible. The last of the naturally aspirated M3s, powered by a 4.0 liter V8 making 414hp and 295 lb-ft of torque.

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  #1  
Old 08-19-2013, 11:36 AM
CliffJumper CliffJumper is offline
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Mein Auto: 09 M3 Sedan
Taller 6th gear?

Has anyone ever replaced 6th gear on their M/T M3?

I only use it on an open freeway, but in that case, the car is somewhere around 4K RPM when driving 80mph, which really seems like a waste of gas.

I know people always say "don't buy an M3 if you care about gas mileage", but 16.6mpg for the past 4 years when I don't drive that hard most of the time just seems stupid, and it's really annoying having to fill up every 225 miles or so.

I don't mind down shifting if I need to pass on the freeway, so I've been wondering how feasible it is to swap in a taller 6th gear. Has that been done before? Is that a ridiculously expensive thing to do?

Thanks!
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  #2  
Old 08-19-2013, 07:43 PM
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MMME30W MMME30W is offline
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Mein Auto: 2009 W906
Taller 6th gear?

4K at 80 seems a bit higher than mine (6MT/E92). IIRC steady 70 is like 3,100. I'll check tomorrow.

You DCT or 6MT? Sedan, coupe, vert?


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Old 08-19-2013, 08:00 PM
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GVFlyer GVFlyer is offline
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Mein Auto: E92 M3/E90 335i xDrive
Looking at the average mileage on my M3, I'm showing 13.7 mpg; if I want to go some place that involves an interstate I use my diesel VW.
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Old 08-19-2013, 08:08 PM
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MMME30W MMME30W is offline
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Quote:
Originally Posted by CliffJumper View Post
Has anyone ever replaced 6th gear on their M/T M3?

I only use it on an open freeway, but in that case, the car is somewhere around 4K RPM when driving 80mph, which really seems like a waste of gas.

I know people always say "don't buy an M3 if you care about gas mileage", but 16.6mpg for the past 4 years when I don't drive that hard most of the time just seems stupid, and it's really annoying having to fill up every 225 miles or so.

I don't mind down shifting if I need to pass on the freeway, so I've been wondering how feasible it is to swap in a taller 6th gear. Has that been done before? Is that a ridiculously expensive thing to do?

Thanks!
Might be easier to change the diff:

http://www.turnermotorsport.com/c-37...and-parts.aspx
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  #5  
Old 08-19-2013, 09:54 PM
CliffJumper CliffJumper is offline
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Mein Auto: 09 M3 Sedan
Quote:
Originally Posted by MMME30W View Post
4K at 80 seems a bit higher than mine (6MT/E92). IIRC steady 70 is like 3,100. I'll check tomorrow.

You DCT or 6MT? Sedan, coupe, vert?
Just under 4K, I think. But, I.. uh... often see 4-5K+ in 6th gear when driving longer distances. 6MT sedan.

Quote:
Originally Posted by GVFlyer View Post
Looking at the average mileage on my M3, I'm showing 13.7 mpg; if I want to go some place that involves an interstate I use my diesel VW.
I enjoy driving my M3 for road trips, so I rarely use other cars.

Quote:
Originally Posted by MMME30W View Post
Might be easier to change the diff:
http://www.turnermotorsport.com/c-37...and-parts.aspx
Yeah, but I don't want to change the gearing for the other 5 gears; I'm rather happy with those.
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  #6  
Old 08-20-2013, 04:53 AM
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MMME30W MMME30W is offline
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Mein Auto: 2009 W906
Taller 6th gear?

About 2,900 in sixth at a steady 70 this morning.

Last trip mainly interstate I was averaging about 21.5. I get the range comment though, filling up so often is a pain.


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  #7  
Old 08-27-2013, 02:11 AM
pkim1079 pkim1079 is offline
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Mein Auto: e90 m3
Taller 6th gear?

But what about when you are shifting from 5th to 6th at 8500rpm?


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