Ken,
Glad to hear that Belle is doing better. I hope you get her home in good shape today.
Charles,
If you're looking for a 16" E-rated tire (perhaps an LT235/85R-16E), I would highly recommend the all-steel construction
Michelin XPS Rib. Although a little pricey, these tires are proven problem solvers under heavy 5th wheels (they are rated for commercial trailer service by Michelin) and are also a tire chosen by many hotshot drivers for use on their trucks.
I've used them on a previous 5th wheel and have them on my truck now and have never had a problem with them. They run noticeably cooler than the fabric-and-steel construction tires they replaced. I only wish they were available in the G load rating required for our current 5th wheel.
Rusty