what gearbox in 125i manual?

janus77 · 08-11-2009, 07:41 PM

Hi All, just wondering, is the gearbox in the 125i the same as the 135i, where would i find this info?

I don't know why, but my gearbox just aint that smooth, am wondering if we get a different box than the 135 manual, or if it's just how BMW makes em?

TimMc · 08-12-2009, 02:16 AM

135 ain't that good either. Remove the clutch delay valve (CDV)! Do a search on this topic to read the numerous posts.

janus77 · 08-12-2009, 08:43 AM

have checked out the topics, but am not sure this is the same thing.. i know when driving hard sometimes i've missed a gear, I guess due to the CDV (couldn't be my driving! hehe, maybe..)

More the point is the feel of the box, it's not a very slick movement, almost reminiscent of my forester AKA "agricultural" gearbox.. just thought a BMW gearbox would have a nicer action.

Was wondering if they substituted some other brand of gearbox into the 125i to keep the costs down and since it's lower power?

Lester · 08-12-2009, 09:20 AM

The Geareboxes are different - the 135i tranny looks a little larger and heavier, no doubt due to the extra torque.

jksgoh · 08-12-2009, 04:39 PM

Quote:

Originally Posted by janus77

have checked out the topics, but am not sure this is the same thing.. i know when driving hard sometimes i've missed a gear, I guess due to the CDV (couldn't be my driving! hehe, maybe..)

More the point is the feel of the box, it's not a very slick movement, almost reminiscent of my forester AKA "agricultural" gearbox.. just thought a BMW gearbox would have a nicer action.

Was wondering if they substituted some other brand of gearbox into the 125i to keep the costs down and since it's lower power?

i have to agree that its not perfectly smooth either, but then again its not bad. guess it's just the way they are.
just a side note, CDV wouldn't make you miss a gear

janus77 · 08-13-2009, 12:48 AM

hehehe... even if i'm changing gears like a formula 1 driver? hahahaha.

janus77 · 08-13-2009, 12:54 AM

Ok, so it is a Getrag box after searching for the id online.. which is good, i had read that somewhere BMW might have put some other generic brand of box in some of their lineup, am glad this was not the case here.

I know the Mitsubishi ralliart colt has a getrag box, the reviews said it didn't feel great, but when you flogged it, the box stood up to work no probs.. was better when driving hard than cruising.

sparoz · 08-13-2009, 08:38 AM

The previous two manual cars I drove before the 135i was a toyota starlet, and the mazada 3. The BMW box is much nicer :P lol. Even manage to pop it out of gear 1 time without trying... (don't ask me why I was doing that).

2nd is still notchy from 1st or 3rd, but not if you are double clutching or rev matching.

janus77 · 08-13-2009, 08:54 AM

ah ok, i wonder how different the 125 and 135 boxes feel? they only had an auto 135 at the dealership when i was test driving.

dr.bmw · 08-14-2009, 12:02 AM

from my experience, most gearboxes loosen up considerably after about 6 months or so.
Give it some time and either it will loosen up or you will adjust. Either way chances are you wouldn't think there was a problem 6 months down the track

08-11-2009, 07:41 PM	#1
janus77 Lieutenant 36 Rep 526 Posts Drives: 125i coupe Join Date: Jun 2009 Location: Sydney iTrader: (0)	what gearbox in 125i manual? Hi All, just wondering, is the gearbox in the 125i the same as the 135i, where would i find this info? I don't know why, but my gearbox just aint that smooth, am wondering if we get a different box than the 135 manual, or if it's just how BMW makes em? __________________ 125i, stick shift, M pack w/ 18's, 225/255 Z1's, saphire black, BMW CF rear spoiler, black interior, Midnight tint, business nav, sunroof, Injen intake, H&R sways.
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08-12-2009, 02:16 AM	#2
TimMc Lieutenant Colonel 44 Rep 1,883 Posts Drives: E90 M3 Join Date: Aug 2008 Location: Brisbane, Australia iTrader: (0)	135 ain't that good either. Remove the clutch delay valve (CDV)! Do a search on this topic to read the numerous posts. __________________ Driving - Manual E90 M3 (Melbourne Red/Black). Riding - BMW R1200RS Sport.
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08-12-2009, 08:43 AM	#3
janus77 Lieutenant 36 Rep 526 Posts Drives: 125i coupe Join Date: Jun 2009 Location: Sydney iTrader: (0)	have checked out the topics, but am not sure this is the same thing.. i know when driving hard sometimes i've missed a gear, I guess due to the CDV (couldn't be my driving! hehe, maybe..) More the point is the feel of the box, it's not a very slick movement, almost reminiscent of my forester AKA "agricultural" gearbox.. just thought a BMW gearbox would have a nicer action. Was wondering if they substituted some other brand of gearbox into the 125i to keep the costs down and since it's lower power? __________________ 125i, stick shift, M pack w/ 18's, 225/255 Z1's, saphire black, BMW CF rear spoiler, black interior, Midnight tint, business nav, sunroof, Injen intake, H&R sways.
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08-12-2009, 09:20 AM	#4
Lester Brigadier General 295 Rep 3,350 Posts Drives: Join Date: Oct 2007 iTrader: (0)	The Geareboxes are different - the 135i tranny looks a little larger and heavier, no doubt due to the extra torque. Attached Images
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08-13-2009, 12:48 AM	#6
janus77 Lieutenant 36 Rep 526 Posts Drives: 125i coupe Join Date: Jun 2009 Location: Sydney iTrader: (0)	hehehe... even if i'm changing gears like a formula 1 driver? hahahaha. __________________ 125i, stick shift, M pack w/ 18's, 225/255 Z1's, saphire black, BMW CF rear spoiler, black interior, Midnight tint, business nav, sunroof, Injen intake, H&R sways.
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08-13-2009, 12:54 AM	#7
janus77 Lieutenant 36 Rep 526 Posts Drives: 125i coupe Join Date: Jun 2009 Location: Sydney iTrader: (0)	Ok, so it is a Getrag box after searching for the id online.. which is good, i had read that somewhere BMW might have put some other generic brand of box in some of their lineup, am glad this was not the case here. I know the Mitsubishi ralliart colt has a getrag box, the reviews said it didn't feel great, but when you flogged it, the box stood up to work no probs.. was better when driving hard than cruising. __________________ 125i, stick shift, M pack w/ 18's, 225/255 Z1's, saphire black, BMW CF rear spoiler, black interior, Midnight tint, business nav, sunroof, Injen intake, H&R sways.
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08-13-2009, 08:38 AM	#8
sparoz Brigadier General 192 Rep 4,848 Posts Drives: VO 1///M; Macan Turbo Join Date: Jun 2008 Location: Sunshine Coast iTrader: (0)	The previous two manual cars I drove before the 135i was a toyota starlet, and the mazada 3. The BMW box is much nicer :P lol. Even manage to pop it out of gear 1 time without trying... (don't ask me why I was doing that). 2nd is still notchy from 1st or 3rd, but not if you are double clutching or rev matching. __________________ Macan S Diesel - Carrera White Macan Turbo - White 1///M - Valencia Orange
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08-13-2009, 08:54 AM	#9
janus77 Lieutenant 36 Rep 526 Posts Drives: 125i coupe Join Date: Jun 2009 Location: Sydney iTrader: (0)	ah ok, i wonder how different the 125 and 135 boxes feel? they only had an auto 135 at the dealership when i was test driving. __________________ 125i, stick shift, M pack w/ 18's, 225/255 Z1's, saphire black, BMW CF rear spoiler, black interior, Midnight tint, business nav, sunroof, Injen intake, H&R sways.
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08-14-2009, 12:02 AM	#10
dr.bmw Chirurgeon 39 Rep 424 Posts Drives: 125i AW/CR Join Date: Apr 2009 Location: randwick iTrader: (0) Garage List 2008 125i [10.00]	from my experience, most gearboxes loosen up considerably after about 6 months or so. Give it some time and either it will loosen up or you will adjust. Either way chances are you wouldn't think there was a problem 6 months down the track __________________ E Pluribus Unum
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