A bad rotor would not necessarily cause a bad vibration as it would most likely create a noise and wear your break pads down unevenly. It could be as simple as an unbalanced tire or a warped rim. Also if your tires are choppy then a vibration can become noticeable. Also a bad bearing or axle could cause vibration (however, it would be noticeable at a lower speed).
Check your wheel bearings, tie rod ends, balljoints and CV axles. A bent rim will also cause a shake at high speed.
A couple possibilities to check out are the lower control arm/ball joint assemblies or the brake rotors. On the Camrys, warped brake rotors along with mediocre quality brake pads is a common cause of high speed vibration. The solution - new brake rotors and preferably ceramic brake pads which will help solve the noise, vibration, and harshness. Alos, make sure all nuts and bolts are torqued to proper specs.
Warped brake rotors will cause pulsation (or vibrations at high speeds) when the brakes are applied. This may also go on to misalign the calipers and cause other vibration related damages.
The speed of the vibration. High speed vibration = high frequency = short wavelength = high pitch. Low speed vibration = low frequency = long waves = low pitch.
Are rims bent, check body bushings or check engine with scanner for variations in running
Either your drums or rotors are out of round.
Warped brake rotors/drums.
yes, A vibration with a frequency high enough to cause itching
At high speed vibration usually its tire balance. Have your tires rotated and balanced.
A high speed vibration can be the result of a wheel out of balance or a tirerod end getting bad. I would have my frontend check . actionjac
High speed vibration is often an indication of a wheel that is out of balance or a bent rim. It can also be a bent driveshaft or bad U-joint. Vibration when you brake at high speed is almost always a warped rotor on the disk brakes.
new rotors can have high spots have them turned also if lug nuts are over tight it can do the same thing i always use a torx stick when installing wheels back on the car or truck