Resonant humming at 60-70mph

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Karrie
Posts: 1
Joined: Sun Mar 26, 2023 5:12 pm

Post by Karrie »

Hi,

Karoq SEL auto 3k miles just bought used. Bridgestone turanza tyres.

I hear a noticeable resonant hum between about 60 and 70 mph. Pretty loud. Speed not RPM related. Goes away once above this speed and also below this speed.

Is this something else others have noticed? Likely to be specific to the tyres, or something else?

Thanks.
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kodiaq
Posts: 842
Joined: Fri Aug 31, 2018 6:33 pm
Location: Poole, Dorset.

Post by kodiaq »

Could be tyres or road surface. Does it occur on all types of surface? What make/model tyres are fitted?
Colin Lambert.
Poole, Dorset.
Diploma Auto Eng.
Moderator Karoq & HR-V Fora.
(Kodiaq Forum Moderator, resigned!)
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CJJE
Posts: 451
Joined: Sat Mar 28, 2020 6:39 pm
Location: Stone, Staffordshire

Post by CJJE »

Interesting that yours has Bridgestone Turanza tyres as mine came on Bridgestone Duelers. These can be pretty noisy depending on the road surface, but otherwise perform well. As Colin says, does the noise vary on different surfaces? Otherwise it could be a body panel vibrating, but I've had no problems like that on my car.

Chris
VW Golf GT 1.9TDI from 11/98 to 3/06; Skoda Octavia L&K 2.0TDI from 3/06 to 12/11; VW Golf Plus SE 1.6TDI DSG from 12/11 to 2/15; VW Golf SV SE 1.4TSI DSG from 2/15 to 11/20; Skoda Karoq Sportline 2.0TSI 4x4 DSG from 11/20.
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Routemaster1
Posts: 96
Joined: Mon Jun 07, 2021 8:16 am
Location: Dorset

Post by Routemaster1 »

Could it be the 2 cylinder ECO mode cutting in? I get a resonant sound from the exhaust when this occurs.
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