Thought I would start with the tyres and wheels first. As they are common items to all three variants.
Trailer 05 by
Tim Crowe, on Flickr
I've used cereal packet as cardstock. This seems to be about 0.75 mm. Thick enough for my needs.
Trailer 07 by
Tim Crowe, on Flickr
The good thing about painting, is not having to worry about white edges.
Trailer 09 by
Tim Crowe, on Flickr
Gave them a few coats of varnish and a good sanding to smooth things over.
Trailer 10 by
Tim Crowe, on Flickr
The tread was fun to stick on. Needed lots of pre-forming needed. Still had 15 goes to get it right.
Trailer 11 by
Tim Crowe, on Flickr
A thick coat of matt black. Covers so much up.
Trailer 12 by
Tim Crowe, on Flickr
Tim