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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, 11:43 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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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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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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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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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, 12:36 PM | #19 | |
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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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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, 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.
vz
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