Car has a very loud humming noise when on highway...

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Old 03-14-2007, 07:16 AM
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Default Solution is simple.

Don't go faster than the posted speed limited.
Old 03-14-2007, 09:24 AM
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Default tire pressure ok? If the noise started immediately after you put summers on, I'd be looking at

tires first. How much mileage on the tires?
Old 03-14-2007, 09:48 AM
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Default Not sure about mileage on tires since they came with the car...

but they look about 1 season old. Tread is still pretty meaty.
Old 03-14-2007, 11:37 AM
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Default If this is a sudden phenomenon then likely it is mechanical and a potentially big deal

if, however it has slowly developed or happened after recent tire work it is likely tread roar. If the alignment is suspect get that checked and corrected. If the tires are worn unusually try moving them around the car to see if the sound changes.

Finally, some models of tire, particularly economically priced ones, develop humming or other noises as the tread wears down. If so, make a note not to buy those for that car again. Worst ones I ever bought with this problem were Pirelli P 7000 Performance tires. Once the industry leading tire they were way too noisy compared to newer designs in the same category.
Old 03-14-2007, 11:39 AM
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Default What size and brand do you have? Check the wear pattern very carefully

sounds like you might have excessive toe in or toe out wear as this commonly causes a hum, howl or whine.
Old 03-14-2007, 01:40 PM
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It sounds like it's coming from the drivers side front.
Old 03-14-2007, 01:45 PM
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Default Tires are BFG g-force KDW on stock 17" avus.

I know these are loud tires to begin with, but this isn't a normal "loud tire noise".

Wear pattern seems normal and even. But since this is a recent development, a wear pattern might not be evident yet.
Old 03-15-2007, 02:24 AM
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Swap wheels and see if it follows the wheel
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