How can I reduce tyre noise?

I would like a car that cruises quietly without the tyre roar that a lot of cars seem to suffer from on run flats e.g. my current BMW 840d coupe and Mercedes E400d estate.

How can I reduce the road noise from my Suzuki Celerio?

I have a 68-reg Suzuki Celerio, it's a good car but road noise is high. Is there any way to lessen it?

Will I notice the difference between 68dB-rated tyres and 71dB?

All tyres now have a dB rating. I understand that the noise level is measured outside the car. Is there any correlation to cabin noise? Would you actually notice a difference between a tyre with a 68dB...

There's a drone from my car at 80mph - what could it be?

I have a droning noise at around 80mph which makes driving uncomfortable on my 2013 Volkswagen Passat. My garage diagnosed tyre noise. I now have 4 Goodyear eagle F1 tyres with the quietest rating for...