Neil Goodrich of Marathon Spares in Australia has a container of military tyres on the water including about 100 900-16. He says they are made to order by MRL (not MRF) in India and the price is very good. He guesses they will sell here well under $300AU/CD. These are standard ND bar treads but I understand they have other patterns available.
Being Indian there is a chance they have chevron moulds on hand.
http://www.mrltires.com/products/ If you look in their catalog under "tractor trailer tyres" you will find a few 9.00-16 patterns they carry as standard.
If they are similar to the Indian MRF they will be as good as any tyre in the world. You must order a full container but they will mix types. He is filling the box with 6.00 and 7.50-16
Do not know about DOT stamp but if not, as someone suggests, they should be brought in as "implement" or "off-road" tyres
If you want the modern 255 equivalent Yellow Sea tyres they are reputed to be good quality. Reason why they are Michelin knock-offs is apparently Michelin is the major shareholder in Yellow Sea. Dare I suggest that Yellow Sea might be producing Michelin branded tyres for some markets?
Lang