Not only is Tire Kingdom (they go by several names) here in Orlando willing to sell me LT tires for the trailer, their service is great.
I ordered the Commercial TA set and when they came in the manager called me with the "born on" dates to confirm that they were new. I took the 35' Titanium up and dropped it in the middle of the parking lot (sorta like an elephant at the Dog and Pony Show). They pulled the wheels; changed out tires; balanced and reinstalled; retorqued and called me to come get it when they were done.
Meanwhile the other customers had to drive around it to get into and out of the store.
No problems.
When a set of TAs was recalled, they had new ones for me within 48 hours after the notice went up on Michelin's website and had them mounted in an hour so I could get on the road as scheduled.