re:  The tech support folks at Michelin also recommended the Agilis
185/75-14 load-rated C tire for my westy.

185/75-14 is a smaller rolling diameter tire than the 185-14 tire
usually recommended for Vanagons.  Tire industry practice is to
usually not list aspect ratio when it is 80; i.e., the recommended
tire is 185/80-14.  It is very common for North American tire dealers
to ignore the difference and recommend 75-series tires, but the fact
is there has never been a European vehicle exported to North America
with 75-series tires.