For over a year I have been experiencing minor vibration in my steering wheel while driving 75+ and it has been driving me CRAZY. I got my brakes replaced due to warping, I got new tires, I got my wheels/tires road force balanced, and I got them aligned and there is still vibration at those speeds. I've even taken it to Infiniti and they don't know what it is. This is a sports car, it should be able to drive at 80 with no problem. It shouldn't feel unstable.

I also drive from Los Angeles to Arizona often so I am constantly experiencing this annoying vibration.

I look forward for some feedback

 

Maybe check your bushings? Can't really tell you much, need more description of what happens, or a video.

 

Steering rack and pinion problem? Not sure if these engines have harmonic balancers on them.

 

If you let go of the wheel or hold it lightly in your hands, does it turn back and forth a bit? Or is it just a straight vibration and the wheel doesn't oscillate at all?

Were your tires balanced at that speed?

 

perhaps a bad wheel bearing. were all tires replaced? i don't believe this is a braking issue since brakes are not applied while you r accelerating or cruising at those speeds.

 

Check the lugs on your rims.

 

New axles? Torn cv boot can possibly cause a flutter. In theory...i am not 100% on that one.

 

If you have a automatic, I had a 2014 Chrysler 200 (FWD) that had mysterious vibration at like 15k miles that felt like driving across the wake up strip on the side of some roads. It would happen as low as 35 mph, very intense shaking at 65. I thought maybe I lost a wheel balancing weight. Took it to the dealer and they were not able to recreate the occurrence in three attempts (one with me driving and the service manager as passenger, accelerating aggressively up to 90 mph) They checked fluid condition and levels and said it was "torque converter shudder". Problem went away, perhaps they used a friction modifier or something but never said if they did anything to change anything, but I never had it happen again after that. I guess though you have a manual, so I'm sorry I'm not sure just what that could be from.

 

Thanks for all the feedback. I'll probably take it to the dealer and have them look at it once again and hope for the best. and this problem started before I did any modifications to my car so it can't be from my aftermarket parts.

 

Did you replace all 4 tires?

 

I had the exact issue on anther car. It was a slightly bent rim

 

Yes, and they're even Pilot super sports...

 

The guy who road balanced my wheels told my there was a tiny dent in my rim but he said it didn't really affect anything

 

Can you isolate the vibration to passenger/driver side and front/rear? If so try switching wheels side to side since your tires aren't directional and see if the vibration moves to the other side, this will tell you it's a wheel/tire issue for sure.

 

Get your tires balanced again.

Problem solved. Seriously.