C5 Tires Noise Comparison - The Quest For Quiet

Defining The Noise Differences Of Many Select C5 Tires

Tom Benford Feb 1, 2009 0 Comment(s)

Test-Result Analysis
Surprisingly, there wasn't a wide margin between the quietest and the noisiest tires for both run-flats and non-run-flats; in fact, the difference was astonishingly small, as these examples illustrate:@ 35 mph -the quietest run-flat tire measured 71dB;the quietest non-run-flat measured 68db;Difference: 3dB

@ 45 mph -
the quietest run-flat tire measured 72dB;the quietest non-run-flat measured 72db;Difference: 0dB

@ 55 mph -
the quietest run-flat tire measured 76dB;the quietest non-run-flat measured 78db;Difference: 2dB

@ 65 mph -
the quietest run-flat tire measured 76dB;the quietest non-run-flat measured 74db;Difference: 2dB

@ 70 mph -
the quietest run-flat tire measured 78dB;the quietest non-run-flat measured 75db;Difference: 3dB

Putting things into a perspective that's easier to relate to, consider this: the total difference between the quietest tire tested at 35 mph (68dB-the Michelin Pilot Sport PS2 non-run-flat) and the loudest tire tested at 70 mph (a 79dB tie between the Goodyear Eagle F1 GS EMT and the Kumho Ecsta MX XRP which are both run-flats) was only 11 decibels-or roughly the sound level of normal human breathing.

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