My 87 Westy (Love Wagon II) has P20570R14 tires and I understand that the
original tires were P18570R14.  I suppose the only problem with that is
that it means that the speedometer is reading too low.  Now that I need new
tires I am considering returning to OEM size but I want to follow the
advice of the collective intelligence in making the choice.  Some recommend
reinforced sidewall tires...my local tire shop doesn't stock these and they
are about twice the price of basic tires.  If my Westy is used only for
occasional camping, driving stability is fine (huge improvement compared to
the 78 vintage Love Wagon I) and almost never off road do I really need
reinforced tires?
Ed