Suspension Noise problems of the 2005 Infiniti G35

My fuel gauge is always acting very wacky and is almost never displays the correct amount of fuel. My headlights are always very dim and don't seem like they need to be replaced. My suspension arm bushing are making a lot of noise.

I own a 2005 Infiniti G35 coupe with the sport tuned suspension option. Rubber bushings on the left and right front suspension compression rods cracked causing severe misalignment and excessive camber. This caused extreme tire wear on the innermost 0. 5-inch of tire tread on both front tires, and exposed and wore through the steel belts and radial plies on the left tire. The remainder of both tires' treads show normal wear with all four treads on each tire measuring 4/32 to 5/32. The excessive wear was not visible due to its location on the tire within the wheel well. There was no degradation in ride or handling while driving the car and no noise created to warn the driver. Owner discovered the dangerous tire wear during routine replacement of front brake pads. Vehicle has all stock suspension with kumho ecsta spt ku31 225/40-19 tires. Owner is the original vehicle owner and retained damaged compression rods and tires for testing. The failure mileage was 56,960 miles on the vehicle and 33,788 miles on the tires.

I have creaking and groaning seemingly originating from the suspension components of my 2005 Infiniti G35. I am also noticing that the car does not handle as well as it did when new. I have raised this issue to my service center several times, the last visit I was told by a technician that Infiniti has the stance that the noises are inherent to the car. I disagree and feel that these noises, combined with the decrease in handling, may be an accident waiting to happen. I intend to raise this same issue with Infiniti.