Re: Size of Lug nuts (bolts) on 1990 80Q

[Thomas Tornblom <Thomas.Tornblom@nexus.comm.se>]

> From: Bob Kunz <bkunz@hpbs114.boi.hp.com>
> Date: Fri, 4 Nov 94 14:23:18 MST
> Mailer: Elm [revision: 70.85]
> Reply-To: quattro@swiss.ans.net
> X-Charset: LATIN1
> X-Char-Esc: 29
> 
> > 
> > 
> > Can anyone tell me the size of the lug nuts?  I want to get a torque
> > wrench to use when changeing the tires, but I can not find any
> > documentation on the size of the socket.  (I know that they should be
> > tightened to 80 n-m, though)
> > 
> Ooops! You really meant to say ft-lbs, right. 80 newton-meters would be
> about 580 ft-lbs -- sure to warp those rotors!
> 
> Mine ('86 5000s) are 17mm and the Sears microtorque wrench I have works
> just great.
> 
> --Bob
> 
> 

There must be some conversion error here.

I tighten my lugs to about 100Nm, which is what the dealer told
me.

A pound is about 0.45 kg, which amounts to about 4.5 N force.
One foot is approx 0.3 m.

1ft-lb => 4.5 * 0.3 == 1.35 Nm.

80/1.35 equals about 58 ft-lb.

Now 80 Nm sounds a bit low to me, but 80 ft-lb -> approx 110 Nm sounds
about right.

Thomas