BMW 1-Series Forum (F20) 135i - 1Addicts.com > Second Generation 1 Series Forum > 2012 BMW 1-Series Sporthatch (F20) Discussion > 125d with 'flat' first gear?
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      06-21-2013, 10:25 AM   #1
spoonflames
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125d with 'flat' first gear?

My car has reasonably good torque, but what if found is that in first gear there is virtually none. It feels flat, like a 2.0 non turbo

Am i imagining things or has anyone else noticed this ?

Or could someone tell me their experience of torque through the 1st and 2nd gears?

thanks
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      06-21-2013, 11:06 AM   #2
ovekvam
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Quote:
Originally Posted by spoonflames View Post
My car has reasonably good torque, but what if found is that in first gear there is virtually none. It feels flat, like a 2.0 non turbo

Am i imagining things or has anyone else noticed this ?

Or could someone tell me their experience of torque through the 1st and 2nd gears?

thanks
I think this has two reasons:

1) The torque is limited in those gears from the factory.
2) Inertia is stealing lots of power in low gears. Too heavy flywheel.
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      06-21-2013, 03:31 PM   #3
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Guessing your car is pretty new. It will get better. I'm on 7.5k miles now and it's a different animal.

In saying all that. 1st gear is pretty shit due to the reasons above. It's a bit better in sport but still pretty nasty. To be honest, first gear is only really needed if you want to hit the factory 0-60. Even then it is just to gwt you moving the first couple of meters. Unlike any other diesel I've driven the 125d can easily pull away in second.
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      06-22-2013, 02:31 AM   #4
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try it with a diesel tuning box. the torque it's incredible for a 2 litre.
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      06-23-2013, 11:22 AM   #5
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Thanks all for the replies.

Bengaz, i am thinking of going down that route (once i've resolve some other issues)
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      06-23-2013, 05:03 PM   #6
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Judging by the sport displays, the 125d is limited to 360nm torque in 1st gear, and 420nm in 2nd gear. I don't know if this is for traction reasons or for mechanical reasons.
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      06-23-2013, 08:29 PM   #7
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Quote:
Originally Posted by jhbodle View Post
Judging by the sport displays, the 125d is limited to 360nm torque in 1st gear, and 420nm in 2nd gear. I don't know if this is for traction reasons or for mechanical reasons.
Probably mechanical, more protection for the drivetrain along with the CDV Pffft.
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      06-23-2013, 10:11 PM   #8
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is your car fairly new ? I had the same issue when i was running in. at 4500km , and the 1st gear doesnt feel as 'draggy/flat' at all now!
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      06-24-2013, 05:43 AM   #9
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Originally Posted by rezzer View Post
is your car fairly new ? I had the same issue when i was running in. at 4500km , and the 1st gear doesnt feel as 'draggy/flat' at all now!
Hiya. Its a year old with 9k on it now. I guess its limited as above. Shame
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      06-24-2013, 06:27 AM   #10
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Quote:
Originally Posted by spoonflames View Post
Thanks all for the replies.

Bengaz, i am thinking of going down that route (once i've resolve some other issues)
You might want to check out my "125d experiment" thread on the other forum.
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