If you were paying attention to my posts I have several times written in detail my 15 year journey of first being an advocate of STs, and slowly changing my opinion. And what it took to put LTs on my 2001 Fleetwood Wilderness. It started out life with 5 lug Rims. And 14" 205 LRC tires. I tried several options on it while still using STs. The last ST was with new 15" rims and Goodyear 215 LRE tires. I had my last blowout aboot 50 miles North of Phoenix.
Thats right, those tires made it 50 miles.
It was summertime and hot as hell. DW was waving passing traffic over as I layed on the trucks floor mats to keep from burning myself on the asphalt. After getting back on the road, DW was concerned. With all the money we been had spending on set after set of upgrading ST tires, and still having failures, she asked me what else could we do short of selling the TT. We had three of our Brittanys qualified to compete in the AKC Brittany Gundog National Championships In Iona Michigan, about a 5000 mile round trip coming up. and needed to have reliable tires to make the trip. I told her that a few people here had said that LTs were better. She said "Do it" I told her it would be expensive. We would need another set of 5 new rims in 16",new 6 lug drums/bearings, some suspension work to obtain clearance and 5 new Michelin XPS RIBS.
she said "Do it. I do not want to see you laying under the TT on hot asphalt with traffic whizzing by you again" I got the swap done for around 1500.00 2006 dollars. And never had a tire issue since.
So in my experience, one can put reliable LT tires on most any TT, if one wants to badly enough.