Hi, would like to ask. Mine is cx5 19inch rim stock toyo tyre. I find the road/tyre noise is too loud to my liking.
Now i am thinking next time change tyre, i can either go for michellin ps4 suv 19 inch tyre or i buy a set of 17 inch and use michelin also.

What you guys think? Is 2nd option worth the extra money for the improved NVH?

At the end i went for 17inch (I change rim) primacy suv.
I feel the comfort and quiet just slightly better than stock toyo. You wont really find the difference after you used to it. The road noise is always there, just need better insulation from the car itself.

Primacy suv is not performance tyre like ps4 suv. But I am quite confident during cornering, maybe i dint drive that fast.

UC6 is low end model from Continental while PS4 is high performance model from Michelin which is 2 levels higher in category. Comparable Continental model to PS4 SUV is CSC5 SUV which maybe even more expensive since it's still made in Europe. Continental if top end models like CSC series are excellent tires that go toe-to-toe with Michelin high performance models. Low end models like UC6 though is tire asal jalan saja. I personally won't buy them. Anyway huge 19' tires, what do you expect on the price? Good tires surely will be very expensive for such huge size.

Best is take back toyo imo. If not because i wanted to try with smaller rim, i will take back toyo.