Vibration and cabin resonance

[Gayrisafi]

Hi all. I have a 2023 Karoq Prestige 1.4 tsi 150 hp fwd. It is one month old at 700 km.

I am generally pleased with it except when I drive it on roads made with interlocking concrete tiles (which, to my luck, compose two-thirds of the town I live in), it slowly starts to make a kind of vibration noise at 15 km/h, which increases to a loud roaring cabin resonance at 22 km/h, then goes away after 30 km/h.
It has stock 18" summer tires on (Goodyear Eagle F1 Asymmetric 5). I tried different pressures (36, 34, 33 psi) but didn't make a difference.

We tried my friends' cars on the same road and within the same speed range:
*2017 Vw Polo 1.2 with Continental Premium Contact 2 made the exact same noise.
*2016 Vw Golf 1.4 tsi with Continental Premium Contact 6 made no noise.
*A 30 year old Renault 9 made no noise.

On other roads it is just the usual tire noise and stiff suspension thuds, which, I guess, to be expected in a C-SUV with torsion beam suspension at the rear.

Do you have any ideas what may be causing this noise and what can I do to narrow it down?

[CJJE]

As has been said elsewhere, it is a resonance due to the size of the tiles and the speed of the car. The solution is either to add a felt liner to the resonating panels or to drive at a different speed.

Chris