Correct stock Tire Pressure ? Vibration @ Highway speeds

T

tranceduden

Member
Hey guys, just traded in my 2010 FX for a 2012, love it albeit it's pretty much the same car :)

One small problem, I get steering wheel vibration at highway speeds, I checked the tire pressure, it shows LF 37 , RF 35, LR 37 , RR 38. Could the vibration be due to uneven tire pressure ? Isn't stock PSI supposed to be 34 ? Just want some quick input before I take it back to the dealer to have it checked out.
 
That really should not cause your vibration. Sounds like an out of balance tire.
As to tire pressure, 33 or 34 is the recommended cold pressure ( it will say in your manual, not right after you have driven it. The pressures go up once they warm up.
i run 35 psi in my tires and I always check them after the car has been sitting all night.
 
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Check the sticker on the door jamb for the factory recommended cold tire pressures. I also say it sounds like a tire not balanced properly.
 
***UPDATE*** Took it back to the dealer TWICE , each time they "force balanced" the tires, I am still getting a vibration at highway speeds not as much as before but it's still there, my previous FX had freaking rock solid steering at ANY speed, this one, not as much... What else could it be ? A bad tire ? Alignment off ? Car was dropped from the delivery truck ? Ugh..:eek.:
 
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The road force balance is supposed to detect a bad tire, but it's not perfect.

I have a loud OE tire on my 2011 that passed road force balancing twice. But it's not exactly right, either. It's gotten better as they have worn in some.

Try rotating to see if it gets better or worse.
 
davidcarson48 said:
The road force balance is supposed to detect a bad tire, but it's not perfect.

I have a loud OE tire on my 2011 that passed road force balancing twice. But it's not exactly right, either. It's gotten better as they have worn in some.

Try rotating to see if it gets better or worse.
Click to expand...

Yeah they rotated them as well when I took it in 2nd time, I noticed 1 of the tires has some letter marking written in chalk on it on the inside of the tire (when you look under the car) I wonder what it means...
 
Being under warranty I would take it to another dealership and see if they can fix it.
 
Make sure to keep all documentation of failed attempts to repair issue and if they fail to resolve it contact Corporate Infiniti with documentation.
 
One constant I've noticed is that Infiniti hold documentation in very high regard when it comes to addressing issues. If there is a papertrail of maintenance and/or attempts to fix something, they will be a lot less hesitant to do right by you.

T'talk
 
Hasn't been my experience, unless you really really reallly push them. I am pretty sure they deal with a lot of crazy customers so to escalate an issue with HQ it really takes a lot of effort. Anyway we'll see, I am going to let the tires brake in for another 1-2K to see if there is any change and we'll take it from there.
 
Most vibrations at highway speeds are due to the power steering rack on the first gen. Just search for steering wheel vibration and you should find more than one thread about the problem and the solution. Not sure how the second gen setup compares.

How are all your brake pads and rotors?
 
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jumbosrule said:
Most vibrations at highway speeds are due to the power steering rack on the first gen. Just search for steering wheel vibration and you should find more than one thread about the problem and the solution.
Click to expand...
He has a 2012
 
Had the dealer look at this, turns out my tires have "flat spots" most likely due to sitting in a lot under inflated for prolonged period of time. They recommended to inflate the tires to 55psi and run about 100 miles on that to see if the rubber adjusts, if not, I will be asking for a set of brand new tires...
 
that would put allot strain against suspension parts, imagine an overinflated basketball that bounces way too much. I would do 48 psi instead of 55. I think thats maximum pressure on our tires. Also avoid driving on the highway
 
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