Originally Posted by geezerb
Is this possible or was he feeding me a load? I might add that he is an RV tech with nearly 40 years on the job.
I have to vote for load....RV tech or not. 20s are passenger car tires.
Tires and wheels that have a rim diameter expressed in "half" inches (8.00R16.5LT, as well as, 14.5, 15.5, 17.5, 19.5 and 22.5) are used on some heavy-duty trailers, heavy-duty light trucks, (Class Cs) box vans, ect. The last two are are of course for heavier truck use and are the primary tires used on Class A's.
19.5's are not hard to find or get. Any tire shop can get them in a day or two. Larger shops that work on trucks will have them. They certainly aren't going extinct any time soon.