I'd be more concerned with the correct load rating over the brand.
If your driving about regularly with a few hundred kilos of water sloshing about in the back, i would make sure that they use heavy load duty tyres.
It is a little known fact that most of the tyres you buy for average joe public cars, from Nahgchang Deathtread 10's to Pirreli and Goodyear....they are all made in China now anyway, as ironically, they have the best factories in the world to produce them.
Its not like the 90's anymore, tyres have to have a minimun standard, and i would say even a set of RoadChump Ecosaver made in 2018 would perform better than a 4 year old set of Pirreli.
Only tyres that are made in europe and uk are the super high spec tyres you find on the likes of Mclaren and etc as they are custom fit, custom order (made to order) and have to be wheel matched when fitted and require a couple of days to balance, fit and check them.