FW: Effects of overtorqued wheel lug nuts

["Masters, David DJ" <Masters.David.DJ@xxxxxxxxxx>]

 Fred  muses  : 
>      I believe it's true that overtorqued lug nuts can cause brake
> rotors
> to warp.  Can overtorqueing also lead to wheel-bearing failure?  I had
> a
> (rear) wheel-bearing failure on my '85 Alfa Spider a couple of months
> after buying new tires, and when I removed the wheel it seemed to me
> as
> though the tire shop mechanics may have overtightened the nuts.  (I
> realize now that I ought to have re-torqued them myself.  But I
> realize
> too that a wheel-bearing failure on a 13-year-old car shouldn't be
> unexpected.)
> 
I am so glad that someone else has brought this up, because I thought I
was the only person being ridiculed for holding the same opinion.  Fred,
I absolutely believe, based on it happening about 3 times, that
uneven/overtightening of wheel nuts will cause rotors to warp.  It
effects my ALFA75 purely in brake application at 80mph.   I have never
had the rotors machined, yet the shimmy has come and gone when I
retorque the wheel nuts correctly, which makes me believe it.

Whether it can be extended to wheel bearings I don't know, however the
uneven torque could be enough to deform the case, causing uneven wear
and then failure.

Cheers,
david
>                                     - Fred Schwab (fschwab@domain.elided)
>                                       Charlottesville, VA
> 

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