the 70 won't, most likely.
and it depends on which clam shell you have, if wanting to not modify the
clamshell in any way.

there are 3 'sizes' that I know of .
where the bolt goes ...very early vanagon  have the bracket there 'flat.'
next up.......normal vanagons, that had 185 R 14 C or 195/75 R 14 LT's ...
that bracket is slightly dropped, allowing a wider tire.

then the kind you really want ...is an even more dropped bracket. Vans that
could have Reinforced 205/70 R 14 tires.......
have the more dropped clamshell bracket.
for example...my 87 Wolfsburg ( needs new home btw ) came with 205/70's and
a michilin 205/65 R 15 C fits in the clamshell perfectly.

I have an 87 GL here....and I was trying to put one of my 205/65 15's in
there, and it would not fit.
The bracket didn't have the more 'dropped' drop at the bolt point.
on that one I'm using a longer bolt and a space to make it fit right ...
but that's what you need....
either make, or get the more dropped bracket from vans that came with
Reinforced 205/70 R 14's .
Maybe all US model syncro's had that more dropped clamshell.

I doubt the 205 /70  15 size would fit easily.
In 2WD drive you don't absolutely have to run the same size spare tire ..but
that's nicer of course.

Scott
www.turbovans.com
----- Original Message -----
From: "Rob" <becida@COMCAST.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Wednesday, January 27, 2010 10:09 AM
Subject: Re: 15 inch wheels: tire size

> At  1/26/2010 02:01 PM, M'obeechi wrote:
>>I need to choose between 205 65 15 and 205 70 15.
>>
>>Where do the votes fall?
>
> Do they both fit in the spare tire holder?
>
>
>
> Rob
> becida@comcast.net