I have a question that my local tire shops can't seem to give me an answer
on.

Yokohama Y370B M&S load range D tires have an 8 ply rating. OK. So why does
the sidewall state sidewall 2ply poly, tread 2ply steel + 2ply poly?

A local tire shop says you add up the belts. If this were true then these
tires would be 6 ply rated and not 8 ply rated. Yet Yokohama sticker, etc
state that they are 8ply rated (1710lbs@65psi) Most LT "C" rated tires
(6-ply) are 1435lbs? Keeping the tire size the same (195/75R-14).........

Any ideas?

BTW Sears got them all mounted for me on my Westy with a final price of
$59.40/ea + Balance + I added high pressure stems rated at 80psi. They are
great tires for my Westy with an M&S rating!. As a matter of fact, they grip
the road better than the Michelins on my GL. This also means with a softer
rubber compound, they won't last as long.

Bill                              And the eagles fly, and the rivers run
'85 GL [*Magic*Bus*]     I look through the night
'82 Westy [FreeBird]       And I can see the rising sun
Big Sky Country              And everywhere I go I see You
<><                                                          ----- Mullins