My steering wheel keeps shaking when i accelerate and cruise above 60 mph. I got my wheels balanced and my alignment done and checked if my wheels were bent but it still does it, i'm going to replace the front left tire because i feel the wheel shaking when i drive.
If that doesnt fix the problem then it will most likely be the power train. Will my dealership cover my power train if i'm on lowering springs, have a front and rear camber kit and 20 inch wheels or do i have to put everything stock to keep my warranty?

 

Did you get a road force balance?

 

As far as Infiniti is concerned, your warranty is over. You will pay less to pay out of your own pocket opposed to trying to go back to stock and get it covered under warranty, especially if the issue stems from your aftermarket parts, such as wheels/tires. You can put on your stock wheels and see if that solves the problem. If it doesn't, that eliminates your wheels/tires as the culprit.

 

If you're running square wheels, swap the wheels front to back and see if the shaking moves with the wheels.

 

Do you have hubrings? What about shaking when coming to a stop?

 

I actually experienced this problem also. Steering wheel mildly shaking when accelerating and also when I braked. I just recently switched out my rotors and got new brake pads and it's a smooth ride now. Idk if your problem is warped rotors like mine but that's how my problem got fixed.