What rpm are you doing @...

one1er · 11-02-2014, 02:44 AM

Hey guys

could you be specific on what rpm are you doing in 2nd gear (both manual and 8-speed) at 25mph (40kph)???

Just wondering how the different ratios between the 2 transmissions vary at this specific speed!

Thanks

IM2C · 11-02-2014, 03:02 AM

I'd like to know the rpm difference at 75mph between auto and manual....

jbenington86 · 11-02-2014, 03:40 AM

Quote:

Originally Posted by e90im

I'd like to know the rpm difference at 75mph between auto and manual....

+1

The little 116i 8 speed 1.5L turbo 4 cylinder I am driving around in right now cruises at just over 3k RPM when going ~108 mph. Was messing around a little on the autobahn yesterday

Close to the engine speed (just under 3k) of my 128i @ 80 mph.

mfourn20 · 11-02-2014, 05:52 PM

If I remember this, I'll try to take note of this during my commute tomorrow....I have the 6 speed manual 228i M Sport.

mfourn20 · 11-03-2014, 11:53 AM

75mph with the 6 speed manual in a 228i is 2750rpm.

espo · 11-03-2014, 01:01 PM

If I remember correctly from this morning... 25 mph (on the speedo) is 2500 rpm in 2nd gear (on a M235i).

TB///M3 · 11-03-2014, 09:14 PM

82-83mph @ 3k rpm
M235 6-speed

IM2C · 11-04-2014, 06:48 AM

Quote:

Originally Posted by BluF22

82-83mph @ 3k rpm
M235 6-speed

Comfort or sport?

Killramos · 11-04-2014, 07:49 AM

Quote:

Originally Posted by e90im

Comfort or sport?

Gear ratios are kindof locked in you can't change them with a button

SomeRandomer123 · 11-04-2014, 08:31 AM

Quote:

Originally Posted by Killramos

Gear ratios are kindof locked in you can't change them with a button

TB///M3 · 11-04-2014, 09:11 AM

Quote:

Originally Posted by e90im

Quote:

Originally Posted by BluF22

82-83mph @ 3k rpm
M235 6-speed

Comfort or sport?

Sport, but like someone mentioned its locked in, but ill try it on comfort just to confirm.

3.0L · 11-04-2014, 09:46 AM

Quote:

Originally Posted by Killramos

Gear ratios are kindof locked in you can't change them with a button

Not true. When I select Sport mode from the Comfort mode, the transmission (automatic) shifts down one gear and RPM goes up. Even when cruising down the highway.

TB///M3 · 11-04-2014, 10:07 PM

Well, ran it in comfort and it was the same.

J-Ho · 11-05-2014, 08:23 AM

Quote:

Originally Posted by e90im

I'd like to know the rpm difference at 75mph between auto and manual....

I did a calculation for my auto @ 80mph some time back. There are calculators out there online that you can punch in the tranny's ratios and it'll spit out what RPM your engine will be at different speeds. See attached for an example

IM2C · 11-05-2014, 10:41 AM

Quote:

Originally Posted by Killramos

Gear ratios are kindof locked in you can't change them with a button

Gear ratios are locked, but I was wandering if throttle mapping in different modes affects RPM as it does with 8 speed auto.
I guess when I change from comfort to sport on mine it just downshifts and RPM goes up. Thanks for clarifying.

My 328i revs at 2,150 at 80mph in comfort.

trey100 · 11-05-2014, 06:23 PM

The gear ratios are much more aggressive on the automatic. I have a f30 335xi 6mt but I imagine the ratios are the same. 3rd gear maxes at around 107 mph which is the same as my previous e90 335 6mt. From the above post, that's a big difference (80 mph vs 107). Adds up to why the auto is a quicker car.

80 mph in 6th is about 2,900 or 3,000 rpm and 25 mph in 2nd is 2,500 rpm in my current car.

Killramos · 11-06-2014, 02:29 PM

Quote:

Originally Posted by e90im

Gear ratios are locked, but I was wandering if throttle mapping in different modes affects RPM as it does with 8 speed auto.
I guess when I change from comfort to sport on mine it just downshifts and RPM goes up. Thanks for clarifying.

My 328i revs at 2,150 at 80mph in comfort.

Fair enough i think i misunderstood you. I believe the minimum shift RPM is different for sure in sport versus eco-pro in particular.

However there is a

amount of people who don't know how gears work here...

ciwhamc · 11-06-2014, 03:30 PM

Quote:

Originally Posted by J-Ho

I did a calculation for my auto @ 80mph some time back. There are calculators out there online that you can punch in the tranny's ratios and it'll spit out what RPM your engine will be at different speeds. See attached for an example

IS that attached image the specs for the 6-speed m235i??

If so it does not seem right.

J-Ho · 11-06-2014, 07:50 PM

Quote:

Originally Posted by ciwhamc

IS that attached image the specs for the 6-speed m235i??

If so it does not seem right.

Nah it was for my auto, so I had to skip a couple gears since there was only input fields for 6 vs my 8.

ciwhamc · 11-07-2014, 12:57 AM

Quote:

Originally Posted by J-Ho

Nah it was for my auto, so I had to skip a couple gears since there was only input fields for 6 vs my 8.

Ok that make much more sense. Thanks. For this info.

11-02-2014, 02:44 AM	#1
one1er Private First Class 19 Rep 138 Posts Drives: M235i (Yet to come) Join Date: Jun 2005 Location: Portugal iTrader: (0)	What rpm are you doing @... Hey guys could you be specific on what rpm are you doing in 2nd gear (both manual and 8-speed) at 25mph (40kph)??? Just wondering how the different ratios between the 2 transmissions vary at this specific speed! Thanks
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11-02-2014, 03:02 AM	#2
IM2C Major General 2067 Rep 5,373 Posts Drives: ∞ Improbability Drive Join Date: Oct 2005 Location: FL iTrader: (9)	I'd like to know the rpm difference at 75mph between auto and manual.... __________________ ///\| g87 \| f87 Comp \| g29 M40i \| f97 Comp \| f80 Comp \| f80 \| f30 \| e92 \| tt \| S5 \| e92 \| 350z \| e90 \|
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11-02-2014, 05:52 PM	#4
mfourn20 First Lieutenant 52 Rep 321 Posts Drives: 228i M Sport Join Date: Jun 2014 Location: Warwick, RI USA iTrader: (0)	If I remember this, I'll try to take note of this during my commute tomorrow....I have the 6 speed manual 228i M Sport.
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11-03-2014, 11:53 AM	#5
mfourn20 First Lieutenant 52 Rep 321 Posts Drives: 228i M Sport Join Date: Jun 2014 Location: Warwick, RI USA iTrader: (0)	75mph with the 6 speed manual in a 228i is 2750rpm.
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11-03-2014, 01:01 PM	#6
espo Captain 12 Rep 715 Posts Drives: 2014 M235i Join Date: Sep 2005 Location: Sugar Land TX iTrader: (0)	If I remember correctly from this morning... 25 mph (on the speedo) is 2500 rpm in 2nd gear (on a M235i). __________________ E46 325xi Oxford Green/Sand Leatherette/Myrtle Wood Auto ZCW - Retired E90 330xi Mystic Blue/Black Leather/Aluminum 6sp Manual ZSP/ZPP/ZCW/CA - Retired F22 M235i Mineral Gray/Red Leather/Aluminum 6sp Manual ZPP/ZTP
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11-03-2014, 09:14 PM	#7
TB///M3 First Lieutenant 76 Rep 389 Posts Drives: 16 ///M3 Join Date: Mar 2014 Location: Northern Nj iTrader: (0)	82-83mph @ 3k rpm M235 6-speed
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11-04-2014, 10:07 PM	#13
TB///M3 First Lieutenant 76 Rep 389 Posts Drives: 16 ///M3 Join Date: Mar 2014 Location: Northern Nj iTrader: (0)	Well, ran it in comfort and it was the same.
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11-05-2014, 06:23 PM	#16
trey100 Colonel 1125 Rep 2,564 Posts Drives: 2020 M2 Competition Join Date: Jul 2007 Location: New York iTrader: (0)	The gear ratios are much more aggressive on the automatic. I have a f30 335xi 6mt but I imagine the ratios are the same. 3rd gear maxes at around 107 mph which is the same as my previous e90 335 6mt. From the above post, that's a big difference (80 mph vs 107). Adds up to why the auto is a quicker car. 80 mph in 6th is about 2,900 or 3,000 rpm and 25 mph in 2nd is 2,500 rpm in my current car.
	Appreciate 0 Quote