Car feels like its about to break apart

[s4rge]

The car is fine on the street. When i jump on the expressway and get her up to 80-90mph it feels like hell is about the break loose. There is so much vibration coming through the shifter handle that i put it into neutral thinking something had broke. The nose inside the cabin is similar to a airplane during landing

Only thing i changed since this started happening was:

New brake pads all around- Didnt resurface or change the rotor

One mis-match tire on the rear. Same size but different brand and tread.

Would any of these things cause a crazy vibration at highway speeds? Also, when i brake hard i get a VRROOOOM sound like a airplane hitting its brakes when your landing.

Could it be my rotors? Once again its fine on the street because i dont drive @ those speeds. I rarely drive @ 80-90 but i just want the problem fixed.

thanks.

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[Maniak]

something could be going on with either your driveshaft or rearend?

 

[Zack]

How did you do the rear brakes?>
Did you use the correct tool to compress the piston in the caliper?

It sounds as though the brakes are hanging up.

 

[nytebyte]

Any vibration in the brake pedal when braking hard from those high speeds?

 

[s4rge]

Any vibration in the brake pedal when braking hard from those high speeds?

The same noise when i apply moderate brake pressure any time. It actually sounds like a jet air plane using its brakes when i apply anything but LIGHT braking pressure.

Yes the brakes were done correctly. Im thinking i might need new rotors.

The drive shaft bolts have came loose before but i tightened up and had no problems.


The rear end. I do get strange metal on metal noises in from the rear end if im hard on the car then it goes away.