I'm thinking about building a trailer or two. For a big utility trailer, there's a really good looking plan up on instructables.com that I'll probably use, and the parts are all easy to get.
However, that's a wide 2-wheel trailer. For touring I'd rather have something like a BOB YAK. Since it has a grand total of one wheel and about $15 in metal and maybe $20 in other parts, I'd like to build it instead of paying $300.
Does anyone know where to get a good quality wheel of whatever size that is? It looks like, what, a 12" wheel or so? I suppose 16" wheels are easily obtainable from kids bikes, but where do you get good 12" wheels? For that matter, where do you get replacement 12" tires?