I've found a source for 8.00 16.5 series E tires.
Retail is $119.80 plus shipping. Shipping's $28 to menlo park.
http://ssl.delti.com/cgi-bin/rshop.pl?cart_id=80440298.135.5654&Cookie=Shopzilla&MountID=4.64802&numfound=127&plz=94025&offset=0&dsco=135&zipRadiusTo=25&details=Ordern&typ=R-201994&ranzahl=4&Breite=8.00&Felge=16.5&sowigan=GAN&station_search=1&F_F_S=

I'm ordering 3 of them today, if I'm happy with that in a week or two I might go ahead and order 4 more.
I'm looking for others who would like to have new tires for their clipper - we could probably negotiate a price break on a large order.

If you're interested, reply on this thread, let me know how many you're interested in

Annie

Those look tough, but don't think I would like the bias ply. Will just stick with mine radials purchased fron discount tire.