When I read the thread title I thought it was a complaint about Canadian Tire (here in ON we refer to it as Crappy Tire
I think heavier trailers give you an upgrade option when buying new. Can't see the gov't doing anything about it though. The tires they supply are probably good enough to get you past the warranty period. I'm sure many buyers have no clue and just keep hauling until one blows. I changed mine out because tires are cheaper than trailer repairs. I sold the used ones to recoup some of the cost.