I got my new tires from The Tire Rack delivered today.  UPS left them on the
front porch.  Here is what they say on them:
YOKOHAMA RADIAL 370 STEEL BELTED M+S
PLIES: SIDEWALL POLYESTER 2
TREAD POLYESTER 2 + STEEL 2
LT19575R14
LOAD RANGE D
MAX LOAD SINGLE 775KG (1710 LBS) AT 450 KPA (65 PSI) COLD
MADE IN JAPAN
Y370B

The sticker also says 8PR LT on it, although the tires don't say 8PR.  I'm not
sure how they get the 8 ply from the above description.

The tread is much more aggressive than the Y356 tires I have now.  These
really look like mud and snow radials.  I expect to have a little rougher an
noisier ride once they are installed.

I'll report back when I get a chance to use them.

Steve
'74 Campmobile
New Side Tents at http://members.aol.com/tentinfo/index.html