I initially designed a full replacement tire, but that many small parts became a little fiddly, didn't look the best and the pegs had a habit of breaking due to such small parts.
So instead I made some wheel covers/tires that go over the original set of wheels. Pretty happy with the overall look.
Latest project ...
Made a gut gun for my Kingdom Cheetor, still deciding what colour I prefer the base part in, before I paint. The gun stores in beast mode using the axe handle as a peg for the base of the gun rather neatly I think, and less "rude" than other ones I've seen.
The third picture (the more golden looking one) might be the better option for painting since it looks closer to his overall colour. And wont require as much to be done.
I like the innovative way of attachment too, incorporating it into the base of the sword/tail.