You have a very quiet GX . Perhaps there is a 460 vs 470 and just the age of the vehicles/tires/seals/etc. Here is mine at 70 mph constant speed on the highway (went through this whole thing recently with trying to get rid of an exhaust drone, which is the 65 db noise). Yours seems to be a good 10 db quieter than mine, though mine is more consistent across the spectrum (could also be phone-to-phone and app-to-app differences).
I can definitely see how a gear wine would literally get lost in the noise unless the vehicle was very, very quiet.
I can definitely see how a gear wine would literally get lost in the noise unless the vehicle was very, very quiet.
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