Lub Bolts

["Al Powell" <APOWELL@agcom.tamu.edu>]

Keith said:

> Two other friends have had similar experiences. One of them complained and 
> was told by the service advisor that there is no relationship between how 
> difficult the nuts are to remove and how much torque was used to put them 
> on! In other words, they were properly torqued and within a week they 
> magically torqued themselves to 200+ lb-ft.

I have also experienced this "magic tightening" and consider it BS. 
But - one note in fairness.  Over some decades, I have observed that 
there in cars which use lug BOLTS (Audi, VW Beetle) there is a 
tendency for the bolts to lock into the rotor or brake drum.  Now, I 
don't think this explains 200+ lbs/ft of torque.  But it may explain 
why a bolt torqued to 80 lbs/ft may require 100 to break free.  (No 
more than that, I'd say...)

In an effort to reduce this, I have started using Anti-sieze on my 
lug bolts.  It seems to work very well in preventing them from 
locking into the rotors.  I recommend this practice to others; it 
makes changing wheels a much more pleasant experience, as long as you 
don't accidentally smear it on your clean clothes.  It doesn't take 
much, and only needs to be renewed once every two or three times you 
remove the bolts.



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