Replacing only 2 tires? 90q

[Ed Kellock]

I believe the vehicle in question has a Torsen diff and that isn't
exactly an open diff.  There will still be some diff activity due to
different tire sizes front and rear.

Ed

On Thu, 8 Jul 2004 16:43:59 -0500, Livolsi, Stephane
<stephane.livolsi at investorsgroup.com> wrote:
> I've pondered this before and came to the conclusion that it really
> doesn't matter with a quattro because they are all open diffs....  The
> only time your diff is not compensating for different tire
> speed/diameter is when you are going in a perfectly straight line.
> Around here, I would guess that my diffs are compensating more often
> than they aren't, so if I had different sized tires the diff would just
> compensate more...
> 
> Of course if you lock the diffs, this all goes out the window as no
> amount of 'same tires' will compensate for different turning radii and
> you WILL wear out your tires fast.  But who locks their diffs on the
> bare streets in day to day driving?
> 
> 
> 
> > -----Original Message-----
> > From: quattro-bounces at audifans.com
> > [mailto:quattro-bounces at audifans.com] On Behalf Of Ed Kellock
> > Sent: July 8, 2004 2:26 PM
> > To: quattro at audifans.com
> > Subject: Re: Replacing only 2 tires? 90q
> >
> >
> > My gut feeling...
> >
> > If there's a reason that two tires _must_ be replaced right
> > now and that _only_ two tires _can_ be replaced right now, I
> > wouldn't like it, but I'm not sure it would be the end of the
> > world.  Plus, if the other two could be replaced in the near
> > future, that would minimize the potential downside.  If it is
> > possible to replace all 4 right now and the concern is that
> > two current tires still have some life left in them, then
> > they could be saved for use later.
> >
> > I'm sure over the years many quattros have had only 2 tires
> > replaced at a time, even some of a different brand of tire
> > with a different actual diameter due to production
> > differences, by owners and tire dealers who are less informed
> > or less concerned about the possible resulting effects.
> > Personally I've never heard of any blown center diffs, with
> > the exception of unfortunate towing events.
> >
> > Am I completely astray here?
> >
> > Ed
> >
> > On Thu, 08 Jul 2004 23:03:52 +0200, Ado Sigal
> > <a.sigal at bluewin.ch> wrote:
> > > David Thoresen wrote:
> > >
> > > > I went to Discount tire today to get new front tires.
> > They measured
> > > > the back tire tread and said I needed all 4 since I had a
> > Quattro.
> > > > (Back tires are 5/32 & 6/32 tread left on Yokohama ES100
> > 205/40R17)
> > > >
> > > > Can I get away with new fronts and leave the back tires as is?
> > > >
> > > >
> > > > . . . . . . . . . . . . . . . . . . . . .
> > > > d a v i d   t h o r e s e n
> > > > 2 0 6  .  8 5 1  .  4 8 5 8
> > > >
> > > > http://www.epicfoto.com
> > > >
> > > > _______________________________________________
> > > > quattro mailing list
> > > > quattro at audifans.com
> > > > http://www.audifans.com/mailman/listinfo/quattro
> > > >
> > > You can, but the central diff is going to have do the compensating
> > > work for the difference in tyre radius.
> > >
> > > Ado
> > >
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> > >
> >
> >
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> >
> 
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