40 psi ...

My owner's manual specifies either light truck tires or reinforced.  It
specifies 40 psi rear for the reinforced.  It came with Michelin LT's.

I have around 20K miles on a set of Continental CR21 reinforced and find
them equal to or better than Michelin XZX reinforced (which are no
longer made).  I find the ride of the reinforced tires to be quieter and
smoother than that of LT's.  I found both Michelin and Bridgestone LT's
to skid easily on wet roads.  Neither the Michelin reinforced or the
Continental reinforced have that problem.

But, I have a GL, not a Westy.

Mike   Phoenix, AZ  '84GL  '58 Isetta  '79 Jet ElectraVan