The higher temp rotor will be the side the car pulls to. Run-out would cause a vibration while braking the limit is .001 total run-out.
Jack the front of the car up and pump the brake pedal a few times with the car off, then try to rotate the wheels, they should turn freely, if they don't you have a caliper that is either not releasing or the guide pins are frozen. Also check that the pads are not binding in the bracket.
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Run out is the disc wobble from side to side. There has to be a little built in to push the piston in a wee bit when you release the brakes.
The rotor does not push the piston back in a wee bit. If the caliper is operating correctly the piston will retract enough to release pressure from the rotor.
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FL rotor also seems to not have worn properly. Appears more shiny from a visual inspection.
Sounds like the LF caliper may be hanging up causing the pads to drag on the rotor and get to hot.
