Subaru Legacy Forums

Subaru Legacy Forums (http://legacygt.com/forums/index.php)
-   Fourth Generation Legacy (2005 - 2009) (http://legacygt.com/forums/forumdisplay.php?f=10)
-   -   Car sounds like it has a flat -- but tires are fine! (http://legacygt.com/forums/showthread.php?t=202864)

nemo 03-04-2013 03:21 PM

Car sounds like it has a flat -- but tires are fine!
 
So I just drove my car for the first time in a few months (it's been sitting in a garage)... about 20 minutes in I start to hear a noise that I could have sworn was a flat tire. The car wasn't shaking... the noise was off an on depending on speed (around 40 and 70).

There is no flat tire, though.

Any ideas?

ir2005 03-04-2013 03:26 PM

flat spots?

Max Capacity 03-04-2013 04:56 PM

Quote:

Originally Posted by ir2005 (Post 4323353)
flat spots?

x2

nemo 03-04-2013 05:21 PM

hmmmm...

will it go away as the car drives? or do I need new tires? :(

nba0203 03-04-2013 05:48 PM

are they cheap ass tires? maybe the tires are just noisy

axis008 03-04-2013 05:52 PM

Quote:

Originally Posted by nemo (Post 4323343)
So I just drove my car for the first time in a few months (it's been sitting in a garage)... about 20 minutes in I start to hear a noise that I could have sworn was a flat tire. The car wasn't shaking... the noise was off an on depending on speed (around 40 and 70).

There is no flat tire, though.

Any ideas?

Did you check the tire pressure? Does it sound like it's coming from a particular spot? Fronts? Rears? Left? Right? Is it more pronounced when you hit a bump? Only at those speeds?

Fitz 03-04-2013 06:01 PM

Answer is no flat spots don't normal go away, its why when u park a car its best to keep them off the ground or move it around now and then

nemo 03-04-2013 06:20 PM

Quote:

Originally Posted by axis008 (Post 4323534)
Did you check the tire pressure? Does it sound like it's coming from a particular spot? Fronts? Rears? Left? Right? Is it more pronounced when you hit a bump? Only at those speeds?

pressure is low. i need to fill up.

it sounds like it's coming from the rear left.

gt06unlimited 03-04-2013 06:58 PM

you may have flattened a belt from letting the car sit. most flatspots from sitting will go away as the tires heat up. overinflate your tires to around 35-40 psi and drive on the highway. the pressure will rise another 1-2 psi as the tires warm up and if its due to sitting it will go away. you can trhen return to normal tire pressure. be ultra careful of potholes and bridge expansion joints at higher tire pressures though. your vibration could also be due to brake rotors. after sitting and going through temperature changes they can warp and vibrate. can you feel any pulsation in the brake pedal or see any shimmy in the steering wheel?

nemo 03-04-2013 07:27 PM

Just filled the tires up at like 38 all around. Still there. I'm in Manhattan which makes it tough to cruise at higher speeds to warm them up but hopefully that will happen tomorrow morning.

There is no vibration at all. Not in the steering wheel not while braking... If I was deaf I wouldn't think anything was wrong. It just seriously sounds like a flat with no other symptoms. But the sound is only there ar certain speeds.

I've just got my fingers crossed that my wheel doesn't fall off or part of the suspension doesn't snap :(:rolleyes::o

Sent from my EVO using Tapatalk 2

sigmafour 03-04-2013 07:43 PM

38 sounds like a bit too much air... it's not a bicycle tire.

what type/make are the tires?

nemo 03-04-2013 08:31 PM

I normally run 38f/36r.

They're Dunlop Wintersport M3

Sent from my EVO using Tapatalk 2

sigmafour 03-04-2013 08:50 PM

I don't have much over 30psi in my tires. I personally think that's a bit too high but if you feel it's safe and working for you...

http://www.spiveylaw.com/images/tireinflation.jpg

thefultonhow 03-04-2013 08:52 PM

Quote:

Originally Posted by sigmafour (Post 4323820)
I don't have much over 30psi in my tires. I personally think that's a bit too high but if you feel it's safe and working for you...

http://www.spiveylaw.com/images/tireinflation.jpg

Um, Subaru specs are 36F/34R... and you need to run higher pressures with some tires (e.g. Continental DW/DWS) because of the soft sidewalls.

I personally inflate to 38 psi just so that as I lose pressure due to normal alloy wheel leakage, I'm not too underinflated for too ling.

nemo 03-05-2013 05:07 AM

I'm well aware of what the specs are. Many people run 38/36 and it works fine for me.

Drove the car this morning. It's definitely not getting better. Possibly getting worse. It seems to happen randomly from 20-70mph. Seems like the main speeds that it's consistent is ~35 and ~65.

But again, there's no vibration or other shimmy. :nervous:


All times are GMT -6. The time now is 03:01 PM.


LegacyGT.com