Your right but do you have a better idea on what could be done to have a more fairier opion on tyres? Do you feel that canstar should weigh in on this? It's easy to say something is done poorly but have no other options on how it should be done.
No, and I didn't say anything was done poorly either ... I have no idea how it could be any different without massive expense (which would have to flow through to the end buyer).
It's just a fact - buying tyres isn't something you can do without gambling, unless you put 100k kms a year on your tyres of course. Even relying on other people's opinions doesn't work, so many people are so over-enthusiastic about what they buy & it's not unusual to be disappointed if you take that recommendation (eg. I once bought a pair of the first-gen Goodyear Eagle Aquatreads in the mid 90's because some random online told me how brilliant they were - they really really weren't, they were truly awful).
Mycar (formally K-mart tyre and auto) actually have a policy in place at the moment, where if you're not happy with your tyres, you can replace them within 30 days.
IMA, generally it takes until you have about 1/2 tread left to find out that they aren't as great as initially thought.
So a little food for thought
Would be hard to wear the fronts down to 1/2 tread within 30 days ... LSx Commodore, though, you could prolly do the rears fairly easily?
As for no-names, I have Chinese made 'Pace" on my Crewman. Came with it when I bought it, probably not something I would buy if I was looking for new boots, but they seem OK, directional tread pattern, wearing OK. But the Crewman is not a high powered sporty car.
Along similar lines, you do have to be a bit careful about parallel imports ... high volume low-price tyre mobs like Tempe Tyres will import tyres from a different source to that used by the official importer, and although the model of tyre is the same they're actually different in different markets. The Tempe Tyres provided Michelin Pilot Sport 4S may not be the same tyre as one you bought from Jax.
Costco seems to use Australian-market stuff, though, and they're not exxy.