Lateral runout inspection

Remove the wheel and tire. (See WHEEL AND TIRE REMOVAL/INSTALLATION .)
Remove the rear brake caliper component and suspend it out of the way using a cable. (See REAR BRAKE DISC REMOVAL/INSTALLATION .)

Fig 1: Removing Rear Brake Caliper Component
Courtesy of MAZDA MOTORS CORP.
To secure the disc plate and the hub, insert the washer (thickness 10 mm {0.39 in}, inner diameter more than 12 mm {0.47 in}) between each hub bolt and the hub nut, then tighten all the hub nuts.
NOTE:
- The component parts of the SST (49 B017 001 or 49 G019 003) can be used as a suitable washer.
After tightening all the hub nuts to the same torque, put the dial gauge on the friction surface of the disc plate 10 mm {0.39 in} from the disc plate edge.

Fig 2: Checking Rear Disc Plate Runout
Courtesy of MAZDA MOTORS CORP.
Rotate the disc plate one time and measure the runout.
Rear disc plate runout limit

0.1 mm {0.004 in}