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      05-03-2009, 11:28 AM   #1
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Wheel Torque settings

Hi

I've got the OEM 19s on my car and will be getting a set of OEM 18s for use as track tyres. I assume that when I swap these over I should use a torque wrench to tighten them up.

Is the correct torque listed anywhere in the manual? I assume it'll be the same for both sets of wheels.

Thanks
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      05-03-2009, 11:33 AM   #2
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88 ft lbs
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      05-03-2009, 11:43 AM   #3
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what he said.
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      05-04-2009, 04:07 AM   #4
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Thanks guys, is that out of the manual? I couldn't see it.
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      05-04-2009, 10:02 AM   #5
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didnt look for it in the manual. this is just what i have been told my numerous people when i asked. Stricly BMW, les schwab, BMW service. its 88.
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      05-04-2009, 10:12 AM   #6
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yeah, 88 is what my old E46 manual recommended, so I too have been using that setting for the E90 M3 as a 'good enough' guess.
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      05-04-2009, 03:51 PM   #7
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BMW doesn't want us to touch our cars anymore, so no more torque specs or dip stick for us!
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      05-05-2009, 11:32 AM   #8
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Quote:
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BMW doesn't want us to touch our cars anymore, so no more torque specs or dip stick for us!
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      06-01-2009, 01:57 AM   #9
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130N-m indicated on the wrench that came with the BMW jack set.
130N-m= 95 ft-lb
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      06-01-2009, 03:02 AM   #10
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IIRC there was a TSB that changed the wheel torque spec from 88 ft/lb to 92 ft/lb for E46s. I know I changed from using 88 to 92 for a reason.
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      06-08-2009, 11:15 AM   #11
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Thanks for your replies guys.

I just phoned up BMW service and he said that the torque setting is 120 ft lbs for the E92 M3.

Is this different as you guys are talking about E46?
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      06-08-2009, 11:23 AM   #12
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Quote:
Originally Posted by Roaders View Post
Thanks for your replies guys.

I just phoned up BMW service and he said that the torque setting is 120 ft lbs for the E92 M3.

Is this different as you guys are talking about E46?
This is good info. Thanks. But it contradicts the info posted above by Thinker23. I wonder if his jack set was M3 specific. I've been going with the E46 spec after asking around BMW CCA folks as I couldn't find any specs in the manual for the E92 M3. I now feel the need to call my service guy since we have too many different numbers floating around. Does anyone have a "published" spec on this?
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      06-08-2009, 12:03 PM   #13
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120 seems extremely high? Anyone verify this? 50% increase? I would be shocked if it differs greatly from 88, thats what I had torqued for 3 consecutive track days, none of them budged.
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      06-10-2009, 01:56 AM   #14
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I'd rather have it too tight than too loose!
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      06-10-2009, 03:00 AM   #15
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Quote:
Originally Posted by bigjae1976 View Post
IIRC there was a TSB that changed the wheel torque spec from 88 ft/lb to 92 ft/lb for E46s. I know I changed from using 88 to 92 for a reason.
Correction, the change was from 74 lb/ft to 88 lb/ft +/- 7 lb/ft.

120lb/ft? That seems pretty high. I guess a tech or service advisor would have the right answer for sure.
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      06-10-2009, 03:34 AM   #16
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Can someone else phone up their service department and ask the same question? If we get the same answer I think we can believe it.

What's the downside for having it too tight? Damaging the wheels?
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      06-10-2009, 09:15 AM   #17
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Quote:
Originally Posted by Roaders View Post
What's the downside for having it too tight? Damaging the wheels?
warped rotors I believe??

Got mine at 90 ft. lbs and my wheels haven't fallen off yet think I'll leave it.
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      06-10-2009, 09:24 AM   #18
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120ft-lb? sounds way high. 90ft-lb has been the norm forever.
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      06-10-2009, 12:36 PM   #19
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Quote:
Originally Posted by Roaders View Post
Can someone else phone up their service department and ask the same question? If we get the same answer I think we can believe it.

What's the downside for having it too tight? Damaging the wheels?
You don't want to overtorque it as it might fail. Here is an example of a failed bolt from the Rogue Engineering site:

http://www.rogueengineering.com/Merc...t_Code=WSPACER

They also state that the BMW spec for M12 bolts is 88 ft lbs. I don't have access to my car, so I can't check to see what kind of bolts are on it. Someone should check this, and call their SA. RE says spec is higher for M14 bolts.
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      06-10-2009, 01:20 PM   #20
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Quote:
Originally Posted by Roaders View Post
Thanks for your replies guys.

I just phoned up BMW service and he said that the torque setting is 120 ft lbs for the E92 M3.

Is this different as you guys are talking about E46?
Weird. 120 lbft is too high IMO. Also 120 nm is 90 lbft which can explain the SA misfire.

Shortly after delivery my lug nuts where <90lbft so no way 120 is the way to go. I keep them at 90 lbft.

I don't trust random SAs but I will ask the good independent shop I use for my track inspections and misc work.
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      06-10-2009, 01:21 PM   #21
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Torque wrench thats for girls I prefer this method

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      06-10-2009, 03:21 PM   #22
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I agree with 120 being too tight. 88 to 90 sounds correct. Mine were in the 90 lbs range on delivery however I have no confirmation this is the correct setting. Over tight can cause failure. I have seen it happen at the track. Lugs will expand as they heat up.
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