hey guys i have the weirdest problem
i brought my 06 5speed gcoupe to the dealer cause ive been getting this consisting noise like a hum when im im driving between 105 km and 110km an hour anything b4 these speeds and after it stops so i have no clue and the dealer obviously told me its nothingg so something is wrong 4 sure the noise sounds like its coming i guess where the tranny is or around that area under the car
any ideas ?

 

hum noise? check your tires...

 

nope nothing wrong with the tires
as i said only between 105 and 110 km , i cant figure it out

 

If not tires, then it could be the wheel bearings.

To confirm this, jack up your car and try to 'wiggle' your wheels. If you notice any 'play' then it's the bearings.

But only at 60+ mph? Sounds like tires to me. G35's are prone to uneven tire wear. And many drivers have the horrible "tire roar" when driving.

 

well that would b something to work with i had checked my tires , bearings and pretty much everything related with the wheels , all i got the is the rear axle needs to be cleaned and greased cause its making that clicking noise when i back up and drive realy slow basically when i park my car

 

well to help out a little more the noise starts from the middle back of the car not in the front and only at the same speeds

 

Yup, might be your wheel bearings. Also when you jack it up and move the wheels around to check for play, spin your wheels adn check for a humming noise. This will also let you know if its the bearings.

 

Likely your bearings. I just had mine replaced. I drove on it for 6+ months and just couldnt figure it out. Brought it to a shop I trusted telling them it was the exhaust. The master mechanic said he was 100% sure it was the bearings. Unfortunately, both were bad but the right was in terrible shape so I had to eat 450 and get the right one replace. I'm going to attempt to replace the left one myself since the part is only $90. For me, the noise got louder as I drove a faster and you could hear the pitch change if you swearve left and right which causes the bearings to torque.

The DYI seems reasonable so you might consider trying it yourself.

https://g35driver.com/forums/brakes-...g-removal.html

Good luck