Those might work on the 0-8-0. I really do not remember what I used. I used "some tires" I had in
my spare tire box. But they look like they could be old RS-11 or RS-3 tires, sliced a little thinner to fit into
the 0-8-0 grooves.
As for traction, if the Broadway E7 will do it for ya without a traction tire, great. But the Kato E8 is heavy
too, and I was surprised at how little it could manage up a relatively modest 1.7% grade. I wanted it to at least
pull my 9-car SP&S passenger train and it could manage 6-7 cars tops until I put the tire on.
I suppose if I had no grades, or only really shallow ones, I would have left it. More pickup is always better than
a traction tire unless you need the pull.