Hey all. I just got a used '04 coupe 6mt fully loaded.

I noticed that the highway noise is quite high. I'm not sure what it is, but a moderately loud humming noise is coming from the rear when on the high way. The faster I go, the louder it gets. How can I tell if its tire noise or something else, like the rear diff or a bearing?

I sure hope it is the tires

These are the tires that are on it front and back. They are a bit worn and I'm looking to replace them.

BF Goodrich g-Force T/A

http://www.bfgoodrichtires.com/tire-...Y/tire-details

 

You should check your tires and make sure that they are not cupping. It is really common on these cars. It is caused by the alignment being off. I have the same problem in the front when I first go my used 04 G35 coupe.

 

it could also be the wheel bearings.

 

Thats what i just replaced, same humming sound

 

Geeze. Any idea of the cost for the parts?

 

Was not too bad ....... 200 or so.

 

Sounds like a wheel bearing to me...but very worn/bad tires can cause similar issues too.

 

Well, AutoZone has wheel bearings for $70. Labor is no issue. I feel like I'm getting ripped off on tires in my local shops. No one carries the stock 245 45 18, or they want $200 / each... What to do. I made the stupid mistake of buying the car and not demanding tires to be put on it....

TireRack seems to be a favored here...

 

I hear that humming noise on my 08 sedan coming from the middle of the car on passenger side. I don't hear it too often though

 

how tough is the wheel bearing install? I am having the exact same problem. any special tools?

 

It turns out it was the tires. They where in a real bad way...