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Road Noise 19" vs 21" Hard Numbers

Discussion in 'Model S: Driving Dynamics' started by Muzzman1, Mar 6, 2018.

  1. Muzzman1

    Muzzman1 Member

    Joined:
    Feb 8, 2014
    Messages:
    407
    Location:
    Los Angeles
    So I just replaced my 21" Arachnids with my 19" cyclones(with Pirelli P7's) for an upcoming trip to Lake Tahoe from LA.

    I figured I'd take a dB noise measurement over a 5 mile road at exactly 50mph in the same lane and see what the average Decibel reading over the drive. (I used dB meter pro on the ios app store)
    My 21" wheels came in at an average of 53dB ad the 19" at 52dB.

    It's a measurable difference!

    I'm not sure exactly how scientific my measurements are, but the numbers match my experience. The 19"'s are definitely less harsh and quieter.
     
    • Informative x 1
  2. DIL

    DIL Supporting Member

    Joined:
    Sep 13, 2013
    Messages:
    653
    Location:
    Danville, CA
    But arachnids!
     
  3. Drewflux

    Drewflux Member

    Joined:
    Aug 25, 2015
    Messages:
    272
    Location:
    Australia
    Its intresting the numbers are not that different. But it Feels quieter
     
  4. Ande

    Ande Member

    Joined:
    Jul 28, 2017
    Messages:
    338
    Location:
    Norway
    dbm does not tell everything, frequency and spectrum is important too.
    I did not measure, but my car with 22" wheels is quieter than a 19" loaner due to aftermarket noise proofing. I think that's the way to go.
     

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