The problem with Eurostars was there quality was not and is not at all consistent. Apart from the fact I just stated, they tend to activate the ABS unit much earlier than Yokohama, Continental or Michelin. The get noisy. As far as the japanese approval was concerned I am sure they didn't test them after they were 6 months or 12,000 kms old and that is exactly what happens to inferior rubber quality in tyres.
I'm personally going to keep the BG Luxo for initial 6 months and check if they are acceptable or not BECAUSE the tyre shop mafia won't be paying for these unwanted and un compatible to any other car 215/55-16 tyres any more than they pay for 195/65-15 Euros, maybe they offer even less max upto 18,000 till 2 years later they come in demand by many who think Yokos are a waste of money.
So instead of blessing that money I plan to utilise some part of it and if they are even 70% of Yokohama. I will keep them. Jahan 50-60k spend karnay parain ge wahan 18k walay tyres ko kuch to use kar chuka hoon ga.