Separating causes of road noise
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Separating causes of road noise
My 2016 A6 TDI has about 160K miles on it. Front wheel bearings were replaced at different times a while back when moderate turn-induced side loading raised squeals, and the noise went away. Now I have road-speed based noise--not really a squeal and not obviously sensitive to turn loading--but cannot seem to narrow the cause. Could be tire noise, thought the Michelin CrossClimates look and measure in decent shape. Though the boots show no cracks or leaks, do CV joints wear out and make such noises. Are there some propeller shaft joints that might sound the same? How best to localize the cause?
Also have a 2015 Q5 TDI with about 95K miles on it, and just had both front wheel bearings on it replaced as one really started howling. That noise was cured, but now I hear the same road-speed based noise as that on the A6. The Q5 has Michelin Defender LTX tires, also appearing in decent shape.
Feel like I need microphones (vibe sensor accelerometers) placed in twelve places underneath and monitored, but zero idea where that capability exists outside of car manufacturer design testing labs!
Also have a 2015 Q5 TDI with about 95K miles on it, and just had both front wheel bearings on it replaced as one really started howling. That noise was cured, but now I hear the same road-speed based noise as that on the A6. The Q5 has Michelin Defender LTX tires, also appearing in decent shape.
Feel like I need microphones (vibe sensor accelerometers) placed in twelve places underneath and monitored, but zero idea where that capability exists outside of car manufacturer design testing labs!
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