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RE: American Racing Silverstone - Lug nuts????

To: "Paige, Dean" <DPaige@ci.santa-rosa.ca.us>
Subject: RE: American Racing Silverstone - Lug nuts????
From: Nicholas Wolf <nwolf@u.washington.edu>
Date: Tue, 7 Sep 2004 17:57:14 -0700 (PDT)
Cc: triumph74tr6@yahoo.com, <triumphs@autox.team.net>
Hi Deano
  I also thought the 70 or 80 ft-lb figure was a little high the first time I 
heard it (from a guy selling me a set of vintage aluminum wheels for my '65 
VW).  Then I looked it up on tirerack.com:

www.tirerack.com/wheels/tech/torque.htm

and it's exactly what they recommend for 7/16" fittings (and modern alloy 
wheels, judging by the illustrations).  In fact, the VW's 14mm lugs supposedly 
need 85-90.
  But you're probably right about older wheels being more fragile than newer 
ones.  If you have not had a wheel fall off in 37 years, then 50 ft-lbs must be 
enough for Silverstones.  On the other hand, one of my aluminum VW wheels did 
work loose once, even at 70 ft-lbs... So I learned to re-torque every few 
hundred miles.  Seems like this would be even more critical at 50 ft-lbs?

Cheers
-Nick


On Tue, 7 Sep 2004, Paige, Dean wrote:

> Date: Tue, 7 Sep 2004 15:43:13 -0700
> From: "Paige, Dean" <DPaige@ci.santa-rosa.ca.us>
> Subject: RE: American Racing Silverstone - Lug nuts????
> 
> I'd be really careful about torqueing mag wheels to 70 to 80 lbs. Fact is, I 
>wouldn't do it on a bet! The most that is recommended for even modern 
>mag/alloy wheels is 50 lbs. That should be more than sufficient. I say this 
>from the experience of using ONE....yes ONE set of American Racing mags 
>original on my first TR-4a and since on my TR-6 for...well let's see... 2004 - 
>1967 that makes 37 years! Beat that! Not to mention that the TR-6 has now 
>clocked 318,000 miles. There is absolutely no need to torque higher and you 
>run the risk of cracking the wheel at that pressure.
> 
> Deano 

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