Disk brake rotors will warp when the overheat. Riding the brakes, a lot of downhill or other heavy, continuous braking can result in an overheated rotor which can cause brake pulsing. Some call it 'brake chatter'.
Often the rotors can be "turned" to make them even again, but if the rotors have worn down already or if the manufacturers specs have been exceeded, turning won't be an option and you'll need to buy new rotors. You can't inspect them to determine if they're warped, but if the vehicle has brake chatter, the rotors are warped.
when ever a wheel is replaced in difference from the original the car should be re tracked up, its the same for rotating wheels from front to back
A seismogram. That is when an earthquake shakes a pendulum and it records it on a rotating drum.
You have a warped rotor. It must be trued at a machine shop or replaced.
It normally means you have a bent wheel or tire out of balance. Have your tires rotated and balanced.
Mine had a warped rotor and i had it replaced and it helped
Your front brake rotors need to be machined or replaced.
Rotors out of round - need to be re-surfaced or replaced
You need the front rotors machined or replaced.
It is generally recommended to replace a single meal daily with protein shakes, and never consume more than half your total meals in shakes, to be on the safe side.
Your front tires are defective. Its time to replaced them.
i have same explorer and my shakes and jerks especially at a light.... what have you replaced on yours?
It must be the rear brakes at fault.