Just got tyres replaced with Kumho ones and they are much quieter now.
I read one of the reviews online for Goodyear Efficientgrip Performance tyres which were factory fitted to my car, that they can become very loud after 20K. That made sense to me as they were loud on the motorways and main roads.
The tyre fitter said the marking shows on my tyres that they were made at week 50 of 2016 so they were quite old and he has seen these thin wires sticking out before.
Anyway, 33K is plentiful for these set of tyres so I can't really complain but if the mileage was low then it isn't right.
Interesting thing is that my Tipo's tyre warning indicator was very accurate - it was flashing in the past several days and I checked the tyres over, they were all ok and I thought indicator might be faulty but no, a few days later, one of rear tyre was flat and the other end was deflated half-way! I swapped the flat one with a spare space saver wheel and inflated the other. The other tyre did not deflate at all over 2 days but despite resetting tyre warning, it still comes up flashing! Once all new tyres are fitted, resetted it and did not come back.
By the way, my old Ford Mondeo MK3 Diesel used to eat tyres very quickly in just around 15K, regardless of which brand! I had to replace new front tyres every year just before MOT.
