I took Bobs advice on checking the Tire dates on my Brand New :-) 88 Dolphin.
When I looked at the date codes on my tires, they all appear to be circa 1995-1997. Wow, 13 and 14 year old tires, probably acceptable for an around town clunker automobile, but not for "at gross weight" operations on long road trips.
In searching through the topics and found one in particular that offered up some good advise on purchasing the tires at the lowest price (I need 6, maybe 7, look at all the tires and determine best condition/date)
http://toyotamotorhome.org/forums/index.php?showtopic=2016
It seems Discount Tire (a national tire chain) has a feature called something like; "I found a lower Price", and they will match or beat that price.
The Forum search also steered me toward a $70 price tag for the Hankook 185R14 8 ply, light truck tire. (called out as RA08)
When I entered that link and my Zip code into Discounts web site, it says they'll get back to me. I'll keep you posted on the outcome of this very important topic.
Discount Tire Link: (look under the price and click the "Found it Lower" link)
http://www.discounttire.com/dtcs/tires/hankook/product/submitProductSize.do?r=WASINT|pc|98203&pc=11011
On Line tire sells for $70 each
http://www.onlinetires.com/products/vehicle/tires/hankook/185%252F00-14+hankook+ra08+n%252Fa.html
BusDepot sells for $76 each
http://www.busdepot.com/details.jsp?partnumber=RA08