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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Suspension | Brakes | Chassis > control arm torque specs



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      03-23-2016, 01:05 PM   #1
ksspacegray07
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control arm torque specs

just confused on which arm is called which, but i need to torque these bolts circled to what specs?
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      03-23-2016, 01:27 PM   #2
feuer
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The one you are pointing at is the control arm, the other is the tension arm. 74/100
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      03-23-2016, 02:00 PM   #3
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Yup, both are 74 ft-lbs.
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      03-23-2016, 02:00 PM   #4
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lol

Try re-reading the chart you just posted; not sure how you're getting confused when the specs are the exact same for both arms.
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      03-23-2016, 02:24 PM   #5
ksspacegray07
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Quote:
Originally Posted by feuer View Post
The one you are pointing at is the control arm, the other is the tension arm. 74/100
Quote:
Originally Posted by PrematureApex View Post
Yup, both are 74 ft-lbs.
thanks guys!
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      03-23-2016, 02:29 PM   #6
ksspacegray07
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Quote:
Originally Posted by FCobra94 View Post
lol

Try re-reading the chart you just posted; not sure how you're getting confused when the specs are the exact same for both arms.
One's a tension arm and ones a control arm, neither are stated clearly on the list. It was very kind of you though, to reply and bash me for not knowing this and wasting your time instead of just stating the torque spec!
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      03-23-2016, 02:42 PM   #7
FCobra94
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Quote:
Originally Posted by ksspacegray07
One's a tension arm and ones a control arm, neither are stated clearly on the list.
Yet BOTH call for the SAME torque value and BOTH appear in your picture...durrr

This is literrally the equivelant of asking a question like which weighs more: a pound of bricks or a pound of feathers.

Unless of course what you're actually trying to ask is "which part is the subframe?" If that's the case you should probably give up on trying to turn your own wrenches.
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      03-23-2016, 03:25 PM   #8
ksspacegray07
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Quote:
Originally Posted by FCobra94 View Post
Yet BOTH call for the SAME torque value and BOTH appear in your picture...durrr

This is literrally the equivelant of asking a question like which weighs more: a pound of bricks or a pound of feathers.

Unless of course what you're actually trying to ask is "which part is the subframe?" If that's the case you should probably give up on trying to turn your own wrenches.
O boy, someones tough on a keyboard. Reading through your posts on other threads and it seems to be a pattern. I feel very sorry for you that it makes your day trying to put other people down.
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      03-23-2016, 04:09 PM   #9
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Putting people down? Not really...more like planting a seed of common sense and due diligence.

No free handouts here kids
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      04-18-2019, 07:11 PM   #10
DrBiggles
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Torque specs -- checking the manual

The OP had torque specs that were the same for both the tension arm and the lower control arm. The Bentley manual actually shows two sets of torque specs for the control arm. The lower range, for the M14 8.8 bolt is (59/80) for steering knuckle and (50/68+90deg) for the subframe.

I thought the bolts I was using were 8.8, but when I brought the car in to be checked by my mechanic (after I did the swap myself) he said the bolts needed more torque. I'm assuming that the right torque to use, then, is the higher range as given by the OP.

Thought I'd document this to save others from making the mistake I did. Now that everything is tightened up, it rides much better.
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      10-23-2020, 06:56 AM   #11
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i was reading this Bentley_BMW_3_Series_2006-2010.pdf

this is what i was able to find


Brake pad carrier to steering knuckle 110 Nm (81 ft-lb) Control arm to subframe: • M12 8.8 (replace with new) 68 Nm (50 ft-lb) + additional 90° • M12 10.9 (replace with new) 100 Nm (74 ft-lb) + additional 90° Reinforcement plate to front subframe 56 Nm (41 ft-lb) (replace fasteners) + additional 90° Road wheel to hub 120 Nm (89 ft-lb) Stabilizer bar link to strut: • M1 0 (replace with new) 58 Nm (43 ft-lb) Strut to steering knuckle pinch bolt: • M10 (replace with new) 45 Nm (34 ft-lb) • M12 (replace with new) 81 Nm (60 ft-lb) Tension strut to subframe: • M12 8.8 (replace with new) 68 Nm (50 ft-lb) + additional 90° • M12 10.9 (replace with new) 100 Nm (74 ft-lb) + additional 90° Tie rod to steering knuckle 80 Nm (59 ft-lb
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