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2015 M235. Michelin Pilot Sport 4s maybe 5 or 6 thousand miles on tires. In town super quiet, I don't even think about road noise.
Last week driving at high interstate speed I became aware of some tire hum but not excessive. But I didn't consciously think about wind noise and I was probably in the upper 80's speed range. That had me thinking on certain concrete highway road surfaces the tires do noise up and on certain bituminous highway surfaces (I think they add a grain for wet traction) the noise does perk up.
In comparison about a month ago took a trip from Baltimore to North of Philly on I-95 and just flowing with traffic and was thinking to myself how can a little sporty car be so refined noise wise. Very serene cruiser - my gf was fast asleep reclined in the passenger seat. Only on a cement surface of the highway along the Delaware River at high speed did tire hum become a thought.
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