1/2 tons didn't have 19.5 wheels.
1 tons and 3/4 tons share the same bolt pattern, wheels, parts, etc (1/2 ton is six lug instead of eight).
19.5's are the tubeless equivalent for the 17" tube type, BTW.
Ohhh okay, that makes sense.
Thanks!
I may just see if I can find a set of 1 Ton width 19.5s then.