​It can be done and requires cutting the rear of the clamshell and
modifying the hinges to lower the rear so the tire fits.  Once done the
tire will fit inflated though it is tight and some people find deflating a
bit makes it easier.  Even with the tight fit on rough roads the tire can
shift and rub against the steering shaft​ but you can either try a brace to
keep it off the shaft or secure the tire to the clamshell.  I don't think I
still have the instructions I followed when doing ours but am pretty sure I
found them on the Vanagon Forum on TheSamba.com.  If you like I can take a
couple photos of ours but it will be a few days before I could get to it.

Mark in AK

On Fri, Sep 23, 2016 at 5:07 AM, Andre Fiedler <fiedlerac@gmail.com> wrote:

> I recently acquired a spare wheel with BF Goodrich All Terrain T/A KO
> LT 215/75R15 tire on it and, if possible, would like to store it in
> the clamshell of my 2wd 89 Westy.  Has anyone successfully made this
> work and if so, could you share details as to how you had to modify
> the clamshell, please?
> Thanks in advance.
> Andre Fiedler
>