Lug Bolt torque
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2010 C63 2019 GLA45
Lug Bolt torque
So all know already that the lug bolt torque is 130 Nm, or 95 Ftlb.
I took another look in the WIS, couldn't remember the number.
So it's 95 WITH Mercedes lubricant.
So, one thing tought in college is that lubrication changes the effective torque by a good amount.
95 dry does not equal 95 lubricated. There are formulae, but 95 lubricated could be as much as 130 dry.
also, the type of grease makes quite the difference.
95 wet with wd40 does not equal 95 with bearing grease.
In this case, the specified Mercedes lubricant, part number A 000 989 76 51 may be needed, because as far as enginnering lubrication properties, we don't exactly know how it compares with antiseize.
This lubricant could promote a mild friction for all I know.
Later, I will try to post a white paper about wet torque vs dry torque.
I took another look in the WIS, couldn't remember the number.
So it's 95 WITH Mercedes lubricant.
So, one thing tought in college is that lubrication changes the effective torque by a good amount.
95 dry does not equal 95 lubricated. There are formulae, but 95 lubricated could be as much as 130 dry.
also, the type of grease makes quite the difference.
95 wet with wd40 does not equal 95 with bearing grease.
In this case, the specified Mercedes lubricant, part number A 000 989 76 51 may be needed, because as far as enginnering lubrication properties, we don't exactly know how it compares with antiseize.
This lubricant could promote a mild friction for all I know.
Later, I will try to post a white paper about wet torque vs dry torque.
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W204 C63 Coupe, W166 ML350 BlueTEC, 928GT, Taycan GTS Sport Turismo, C5 Z06 & IS300 race cars
You never, EVER apply any lubricant to the wheel bolt threads. Yes, you are absolutely correct that a lubricant changes the effective torque by a large amount - which is why I can't believe that something that is obviously wrong would be listed as part of the procedure in WIS. Perhaps something somewhere got misinterpreted - like that using a little bit of copper paste (or whatever this lubricant is) around the wheel centering hub when changing wheels is a good idea, but most certainly not on the bolts...
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If you've torqued bolts to 95 ft-lb with anti-seize on the threads and never had issues, you've been very lucky. The OP is definitely not reading to much into it... the consequences of over-tightened bolts snapping can be catastrophic.
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2010 C63 2019 GLA45
So anyway, I never went to look at the linked description. In it, at the end, they do clarify that they mean the center hub seating area.
And the way things are stated in the table above is a bit confusing, as we're dealing with the row of the table that deals with bolts and then they reference corrosion protection and apply hot lubricating paste.
So, no, it is dry torque, sorry for the diversion.
And the way things are stated in the table above is a bit confusing, as we're dealing with the row of the table that deals with bolts and then they reference corrosion protection and apply hot lubricating paste.
So, no, it is dry torque, sorry for the diversion.
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'13 C63 & AP2 S2000
I believe there is a big difference between putting anti-seize on the threads and anti-seize on the seat of the bolt..
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^ +1. 
The difference is in how they are most likely to fail. When your wheel comes off at speed, I'd think it would be pretty irrelevant whether it was because the bolts snapped at the heads or because the threads sheared.
The difference is in how they are most likely to fail. When your wheel comes off at speed, I'd think it would be pretty irrelevant whether it was because the bolts snapped at the heads or because the threads sheared.
