[DeTomaso] Wheels - New Source - Group Buy

[Tomas Gunnarsson]

My point was that neither the bolts nor the hub protrusion is supposed to
carry any load when the bolts are tight.

Tomas
  -----Original Message-----
  From: Ken Green [mailto:kenn_green at yahoo.com]
  Sent: den 25 september 2010 18:14
  To: MikeLDrew at aol.com; detomaso at realbig.com; Tomas Gunnarsson
  Subject: Re: [DeTomaso] Wheels - New Source - Group Buy


        I would suspect that because no fit is exact there is not a single
simple answer.  There are simple lug nuts with a taper against the wheel
that can bear some lateral load, there are lug nuts with cylindrical
portions that bear against matching cylindrical recesses in a wheel and
would bear a lot more load, and the actual fit of a hub centered wheel to
the hub has some tollerance.  But it does seem a lot easier to mount a hub
centered wheel than to wrestle the wheel into a correct position w.r.t. the
lug nut studs.

        Ken

        --- On Sat, 9/25/10, Tomas Gunnarsson <guson at home.se> wrote:


          From: Tomas Gunnarsson <guson at home.se>
          Subject: Re: [DeTomaso] Wheels - New Source - Group Buy
          To: MikeLDrew at aol.com, detomaso at realbig.com
          Date: Saturday, September 25, 2010, 8:55 AM


          IMO what Tire Rack writes is not entirely correct. The hub fit is
there to
          locate the wheel while it's being mounted. Once the nuts or bolts
are tight
          the clamping force against the hub will take care of any loads be
it from
          rotation or vertical motion. If the centering rings were actually
loaded
          plastic rings wouldn't work too well, would they?

          Tomas

          -----Original Message-----
          From: detomaso-bounces at realbig.com
          [mailto:detomaso-bounces at realbig.com]On Behalf Of
MikeLDrew at aol.com
          Sent: den 25 september 2010 07:37
          To: lotus0005 at hotmail.com; detomaso at realbig.com
          Subject: Re: [DeTomaso] Wheels - New Source - Group Buy


          In a message dated 9/24/10 19 53 47, lotus0005 at hotmail.com writes:


          > Mike, I've followed several of this thread - what does
"hub-centric"
          > mean?
          >

          Sorry...it means that the center of the wheel indexes perfectly on
the
          protrusion on the hub.   You could remove all the studs, lay the
wheel in
          place
          and spin it and it would stay perfectly centered.

          Lug-centric wheels rely on the conical face of the lug nuts (or
lug bolts
          on German cars) to center the wheel, and the center of the wheel
doesn't
          touch the protrusion on the hub.

          Adapters are available to allow a lug-centric wheel to index
properly on
          this protrusion.   Here's a nice example:

          http://www.miata.net/garage/hubcentric.html

          These rings are widely available from any good tire store, Tire
Rack,
          Amazon etc.   All you need to know is the outside diameter of your
hub, and
          the
          inside diameter of your wheel center.

          Tire Rack says this on the subject:

          ====

          Make certain that the wheel's installation hardware is correct for
the
          vehicle and in good condition. Since almost all of today's cars
are designed
          with hub centric wheels which transfer the vehicle's load from the
center of
          the wheel to the car's hub (and allow the lug nuts/bolts to just
hold the
          wheel against the hub), it is important that track wheels continue
to be hub
          centric to help distribute the forces encountered on the track. If
an
          aftermarket wheel requires special centering rings to properly fit
it to the
          hub, be
          sure they are installed and installed correctly.

          ====

          Cheers!

          Mike
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