Noise was not an issue on 20 - inch Hankooks, but Continentals are also standard on the RS 5 and on past history they have struggled to contain tyres roar on coarse Aussie roads. (motoring.com.au)
Although wind noise is well contained and the engine is subdued, there's a lot of tyre roar over coarse road surfaces. (whatcar.com)
The 20 - inch alloys thump a little over road studs, but the Aston isn't immune from that, either, while there's marginally more tyre roar in the Porsche. (autoexpress.co.uk)