RAM 1500 Truck 2WD V6-3.9L VIN X (1999)
Measuring Rotor Thickness
Measure rotor thickness at 6 to 12 points around the rotor face.
Position the micrometer approximately 25.4 mm (1 inch) from the rotor outer circumference for each measurement.
Thickness should not vary by more than 0.025 mm (0.001 inch) from point-to-point on the rotor. Machine or replace the rotor if necessary.
