It's not about what is the best tyre for the car.It is funny, and this goes with all car manufacturers, we choose their product, being a Formentor or whatever, which means we trust them and we put our money to them and then we turn around and say, no, we know better than them , the tires they put on are crap. I've said that before and I will say it again, if you were a Cupra developer, executive whatever, would you really put crap tires to a car you count on introducing your brand with and basically depend on making a good name, especially today when the competition is fierce? Didn't they know better, or do we think that we know better? We are talking about a sporty to performance car, don't you think that they have tested different brands before they choose which one suits best? Would they put a crap tire to their car so that it would feel unsafe and difficult to drive? Would that bring more customers to them? Who on earth would allow this in a sporty performance brand? Yes, ofcourse decisions about tires and every part of a car are also decided basis the production cost and economics but not to the degree that this decision would harm the brand, especially a new brand. The Bridgestones are not considered cheap, they are in the same price range or very close to similar Michelins or Continentals. Yes Michelins or Continentals or any other brand may seem, according to our liking, marginally or way better, still this is mostly subjective and depends on a lot of factors, like where you live, weather conditions, road conditions, driving style and so many more. No tire maker can make a tire that will outperform under any conditions any other tire. All these premium tires are all worth their money, there are no crap tires in that range, its all about personal preference, you win some you lose some, and although I would have preferred to have Michelins from factory, since I'm a Michelin guy, I'm happy with the Bridgestones, for 15000 kms so far never have they let me down once.
Cars can ship with a variety of different tyres.
One model year may be Bridgestone. One model year may be Michelin.
It entirely depends on who they have the contract with that year / what they can get them in for.
They may have 3 or 4 different approved tyres for each vehicle. Just depends what stock they can get in / the price they have to pay