reguarding the yokohama's I have the d rating on my westy, and while
they are not as nice as the duellers (I ran duellers on an old four
runner) I have found no reason to complain about them.  I have driven
them mostly on the interstate, and in mud/rain and snow.  My van is
much less succeptible to cross-winds and corners better than it did
with it's previous mix matched soft walled tires.  I plan to keep
running these tires until they quit selling them..