I have given this some thought . If I were you I would
   measure the tread depth of all the tires, (3 old and
   1 new) and rotate them as to end up with the best and
   the worst tire on the same axle. Hopefully this would
   keep the axles running at the same speed.

            Eric                   86-VW4x4
            vw4x4@fyi.net          72-240z
            Pittsburgh, PA USA     1936-Chrysler

On Sat, 13 Dec 1997, JMatthisen wrote:

> So my 1990 Syncro Westy lost a tire.  I have Michelin MXT's with about 20k
> miles on them.  I had a friend bring in a new MXT -- what do y'all think about
> the diameter difference of the new vs the 20k tires....  Spare is a MXL.  I
> don't have many choices and think it will be fine, but ????  Oh yeah, I am
> 2400 miles from home.
>
> Any advice or suggestions appreciated.  Hasta Luego....James
>