all the tire shops i ever dealt with consider a sidewall rating of 2 ply or
more, "reinforced".    most passenger car tires only have 1 ply sidewall
rating.   every vanagon ive ever seen with "reinforced" sidewalls, it says "sidewall
rating, 2 ply" on the tire..
so that works for me..   no need to break the bank to get "special tires"...
i see people  laying down $500+ for some "special vanagon reinforced tires"
and just laugh..

I went to Sears and got a set of Guardsman 215-75-15 M+S all seasons with 2
ply sidewall, and have been running them on my vanagon for about 4 yrs now..
they cost me like $45 each i believe.  great tires and im pleased with them..

chris