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The 328i I tried was running 18" Goodyear Efficient Grip ROF, they are rated as quite a quiet tyre at 69 dB, so very surprised they gave so much noise into the car.
BTW, I'm on 18" Continental SportContact 3 SSR, rated at 72dB, which appear a lot quieter by comparison, but the 5-series is a much more refined car, so probably not a good comparison. But when testing the 328i was running my E91 330d, so noticed how bad the F30 was compared to my car.
HighlandPete
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