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BMW 3-Series (E90 E92) Forum
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e90 sedan suspension torque specs
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03-04-2020, 02:09 PM | #1 |
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e90 sedan suspension torque specs
Switching out control arms for m3 versions, replacing shock/struts and springs (Koni Yellow/Eibach Pro), endlinks, and replacing tie rods. Some of these values seem really high for the knuckle connections. Just trying to confirm I have the correct torque specs on all these items before I snap something lol.
FRONT SUSPENSION Strut top mounting nuts - 34 NM/25 ft lbs Strut pinch bolt/nut - 81 NM/59 ft lbs Front control arm to knuckle (tension strut) - 175 NM/129 ft lbs Front control arm to subframe (tension strut) - 100 NM/73 ft lbs +90° Rear control arm to knuckle (wishbone strut) - 175 NM/129 ft lbs Rear control arm to subframe (wishbone) - 100 NM/73 ft lbs +90° Sway bar endlink to sway bar - 58 NM/42 ft lbs Sway bar endlink to strut - 58 NM/42 ft lbs Steering outer tie rod to knuckle - 165 NM/121 ft lbs Steering inner tie rod to steering rack - 100 NM/73 ft lbs REAR SUSPENSION Roll-over arm to subframe (spring/shock seat arm) - 165 NM/121 ft lbs Roll-over arm to knuckle (spring/shock seat arm) - 165 NM/121 ft lbs Upper control arm to subframe (wishbone) - 100 NM/73 ft lbs Upper control arm to knuckle (wishbone) - 100 NM/73 ft lbs +90° Lower control arm to subframe (guide rod) - 100 NM/73 ft lbs Lower control arm to knuckle (guide rod) - 100 NM/73 ft lbs +90° Toe arm to subframe - 100 NM/73 ft lbs Toe arm to knuckle -100 NM/73 ft lbs Sway bar endlink to sway bar - 58 NM/42 ft lbs Sway bar endlink to knuckle - 21 NM/15 ft lbs Shock bottom nut - 38 NM/28 ft lbs Shock top nut - 27 NM/20 ft lbs Bottom shock mount bushing - 60 NM/44 ft lbs Last edited by nerovega; 03-04-2020 at 02:17 PM.. |
03-04-2020, 07:11 PM | #2 |
Colonel
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[QUOTE=nerovega;25884617]Switching out control arms for m3 versions, replacing shock/struts and springs (Koni Yellow/Eibach Pro), endlinks, and replacing tie rods. Some of these values seem really high for the knuckle connections. Just trying to confirm I have the correct torque specs on all these items before I snap something lol.
Sorry I can't find my notes on these values offhand, but, I know that some of the settings depend on the grade of fastener. The difference between a grade 8.8 and 10.9 is significant. Try to get hold of a Bentley manual use this site https://www.newtis.info/tisv2/a/en/
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E82 - BMWP Springs / Koni Yellows / M front control arms / Adjustable front endlinks / M rear guide rods / Whiteline Poly RSFB
F22 - Stock M Sport, 6MT |
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nerovega39.00 |
03-05-2020, 07:59 AM | #3 | |
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03-05-2020, 09:16 AM | #4 | |
Colonel
2196
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The only values that stick out as being different than what I used are the front arms to knuckle. I had 165Nm/122 ft-lb. which came from the 2006-2010 3 Series Bentley manual. Not a huge difference.
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E82 - BMWP Springs / Koni Yellows / M front control arms / Adjustable front endlinks / M rear guide rods / Whiteline Poly RSFB
F22 - Stock M Sport, 6MT |
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nerovega39.00 |
05-25-2024, 03:47 PM | #5 |
Rank Novice BMW owner.
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Drives: 2009 328xi w/ CIC 6spd Manual
Join Date: Jul 2019
Location: Kingston Ontario Canada
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FOR XDRIVE CARS: DO NOT use these torque specs.
Specifically: "Rear control arm to knuckle (wishbone strut) - 175 NM/129 ft lbs" is DEAD wrong. I just relied on it.... and blew out a ball joint. This torque value I found is 59 ft lbs. USE: https://www.fcpeuro.com/blog/how-to-...328i-330i-335i Last edited by niteshadesc2; 05-25-2024 at 03:53 PM.. |
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