Intrusive noise

The Dunlops are regarded as relatively quiet tyres and are unlikely to be the cause of your complaint unless there is a misalignment problem with the rear suspension. If there is, the tyres could be wearing unevenly which could cause a noise problem. Other than that, the most likely cause is the body structure of the Corolla and its lack of insulation which allows the noise to be transmitted through to the interior. In that case, changing tyres is unlikely to achieve the sort of improvement that would satisfy you. Check the rear wheel alignment and adjust if needed. Other than that, I reckon you're stuck with it.