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Quiet cars

  • 08-10-2011 5:27pm
    Registered Users Posts: 900 ✭✭✭

    I got an app on my iPhone to measure sound called decibel ultra (free).

    Just used it in the car coming up the M2. Read from 80-85 db at 120k/h. Apparently hearing damage can begin at 85.

    Noise on a long drive can be really tiring and annoying. So what cars a quiet and what's not, I reckon my e200 was quiet but never measured it.


  • Registered Users Posts: 23,355 ✭✭✭✭mickdw

    I dont know what E class you had but I believe the w124 was pretty much the bench mark for many years.

  • Registered Users Posts: 1,703 ✭✭✭Mr.David

    Depends. Its a combination of powertrain noise, wind noise and road noise. Within that you have structure-borne noise and airborne noise.

    Generally cars with larger alloys, wider tyres or firmer suspension will be more susceptible to road noise.

    One of the quietest cars I've driven was the BMW 5GT. Its like a tomb, albeit an ugly one.

    When you measure the noise level in the car and it outputs a dB reading - is that A weighted? As the human ear does not perceive loudness equally at all frequencies hence the A weighting idea. Also, you have to consider the frequency spectrum, a peak at a particular frequency can be extremely irritating.....