Yikes!  Are you going so far off into the wilderness that there won't be a tire shop or gas station around?  If you are driving the Dalton you can definitely take two: http://wpo.st/eRYT1    

RMW, Go Westy, and Burley all have very nice rear racks/rack systems.  No personal experience.

Stuart

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of John Rodgers
Sent: Sunday, April 10, 2016 11:20 AM
To: vanagon@GERRY.VANAGON.COM
Subject: Spare tire

Hoping to do ome serious traveling this summer, and from sad experience,
determined I have need of carrying two spare tires. They will be oversize,
so the carrier under the van front has to be modified. Waiting on BenT's
new gadget o fix that. For spare tire #2 I would like to mount it on the
rear of the van somehere. On a swing out mount, maybe. Anyone with
experience with rear mounts. Can you refer me to a source or vendor. There
used to be someone who made mounts, carrier racks, etc, on this list but I
have forgotten the name.Annyone remember?

Thanks,

John