I've driven a Model 3 with the 19s, and it doesn't surprise me that they handle and stop a little bit better in the dry than the 18s. I've heard they're pretty good in the wet but not so good in the snow and ice, but that is again anecdotal. In any case, a set of PS4s tires will just kill them in the dry.
In any case, your contention that "Tesla uses inflated ECO tires on their cars, you can't compare consumption numbers 1:1 to other cars. These ECO tires are pretty slippery in rain. Tesla doesn't care about your safety. All they care about marketing." is obviously false.