What grease for wheel nuts?

jamesgarbett said:
Interesting - I had a slight feeling it might be none

Why is that out of interest?

Grease can turn the recommended tightening torque into a greater force due to the easing of friction on the nut/bolt & they can end up over tightened :thumbsup:
Rob
 
I've used a soupson, a whisper, a mere smidge of copper grease for years now on my (clean) wheel bolts after getting caught out with seized bolts previously. Also applies to sparkplugs.

I stopped torquing my wheel bolts in favour of gauging by feel that they're tight enough and checking tightness every other week.
5 bolts was a good idea from BMW and increases failure/loss mitigation if 1 or even 2 bolts become loose.

But this is one of those benefits/disbenefits choices which ultimately won't change how the world turns doing it one way or the other!
8)
 
Have to agree with the above that I for the last 15 plus years have always put a little copper grease on wheel bolts over all my cars in that time. Never had an issue. Also wouldn’t use a torque wrench and would prefer my own engineers hands to gauge the torque.
Each to there own though.
 
Copper grease. It's been used since the dawn of time and "IS AS GOOD TODAY AS IT'S ALWAYS BEEN"
It's more pertinent now than ever; all to do with dissimilar metals and contact thereof.
Bolts are steel, wheels are alloy (god knows what these days).

If you use nothing your wheels won't fall off. But the bolts could sheer the next time you try to loosen them (unlikely but you asked). :thumbsup:
 
The consensus of opinion is for 120nm of torque on wheel nuts. I did it and found it just "felt" a little light, so went for 140. It just feels more secure! As long as the face of the wheel and disc is also lubed with aforesaid copper grease, otherwise you can't get the f*ckers off! :D Again the dissimilar metals scenario.
 
[ref]Pondrew[/ref], Don't forget as the wheel and hub heat up they expand. So I would be cautious about going beyond the recommended torque setting.
 
Reamesy said:
Pondrew, Don't forget as the wheel and hub heat up they expand. So I would be cautious about going beyond the recommended torque setting.
Yes, agreed, but when your local quick fit change the tyres they do the bolts up with a pneumatic gun which is set at about 1000nm! :D
 
Pondrew said:
Again the dissimilar metals scenario.
Actually the dissimilar metals scenario (galvanic corrosion) has nothing to do with bolts seizing up in this case
Aluminium is by far the least noble metal here, so that acts as a sacrificial anode, if any of the metals here would do so (that's why aluminium rims are painted, nobody wants to see them rust)
The zinc plating on most metal parts is 2nd
Bolts seize up just because of plain rust (clearly the effect of the less noble sacrificial metals is not enough).
The bolts are zinc plated. First time use (in the factory), the zinc plating is still in tact, but if they are removed and reused, there will be spots where the zinc plating is damaged from first time used, so a little copper grease is indeed a good defense against seized bolts.
I've had cars from new that were factory fitted with copper grease on bolts and rim/hub contact patch (my volvo for example)

So I always use a bit of copper grease. I don't adjust my torque range. (so in theory I could be over torqing my bolts with about 8-10%).
I think using a torque wrench is important. Not per se on using the correct torque, but more on that all bolts are torqued the same, so that there is no dissimilar tension on the hub and wheel.
 
Bmwz4ruby said:
wouldn’t use a torque wrench and would prefer my own engineers hands to gauge the torque.

Yup, about three white knuckles does it for me. :wink:
 
enuff_zed said:
Bmwz4ruby said:
wouldn’t use a torque wrench and would prefer my own engineers hands to gauge the torque.

Yup, about three white knuckles does it for me. :wink:

With your picture and that quote it sounds like we both work/worked for the same organisation!
 
Bmwz4ruby said:
enuff_zed said:
Bmwz4ruby said:
wouldn’t use a torque wrench and would prefer my own engineers hands to gauge the torque.

Yup, about three white knuckles does it for me. :wink:

With your picture and that quote it sounds like we both work/worked for the same organisation!

23 years Airframes/Engines techie (Ex-appo) :D
 
Never had wheel nut problems, greased or not. Have had locking nuts stuck, though.

Presumably because the adaptor failed. As a result of galvanic corrosion, poor design, whatever, I don't know. (I don't take wheels off cars. That's what the AA and garages are for.)

I do know that the last failure cost me £100+ to remove two stuck locking nuts and for a new set and an adaptor. So, am thinking of abandoning locking nuts altogether and going without.
 
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