thanks Mark,

that makes sense... I went on the internet and read some more (e.g. Tires
101). Adding 5 or 6 psi won't change the diameter. Some manufacturers
recommend lower pressure in the Front than in the Rear for their 4WD
vehicles e.g. Toyota Tacoma 4WD --> 26 Front / 29 Rear. - The difference of
PSI for Front and Rear is meant for stability.
https://www.souzastireservice.com/Tires-101/Air-Pressure

so I answered my own question :-)

On Mon, Feb 1, 2021 at 9:39 AM Mark McCulley <markmcculley@gmail.com> wrote:

> The circumference of the tire isn't going to change appreciably with
> pressure, you will still get the same number of revs/mile as the rear tires
> so no stress on the VC.
>
> -Mark
>
> On Mon, Feb 1, 2021 at 8:42 AM OlRivrRat <OlRivrRat@comcast.net> wrote:
>
> >         My understanding > Having Lower pressure in FRONT tires on a
> Syncro
> >
> > might cause undesirable Stresses on Your Viscous Coupler ~
> >
> >                                                 ORR ~ DeanB
> >
> > On 30 Jan , 2021, at 10:50 AM, Dan N wrote:
> >
> > > thanks Dennis,
> > >
> > > I try to figure I am right or wrong after talking to that guy... this
> is
> > > what I have now
> > >
> > > *Syncro tintop with General Grabber LT 27x8.5R14 ---> Front 42 psi,
> Rear
> > 46
> > > psi*
> > >
> > > *Syncro Doka16 with Cooper  LT 225/75R16 ---> Front 44 psi, Rear 48
> psi*
> > >
> > > I am not sure if I should leave it as is or have the same pressure on 4
> > > tires
> > > on the Doka, after leaving the tire shop for new tires, they put 48psi
> > all
> > > around.
> > >
> > > thanks again
> > >
> > > dan
> >
>