1. Verify that the joint shaft is not twisted or cracked.
2. Turn the joint shaft by hand and verify that the bearing rotates smoothly and freely.

Drive shaft
Joint shaft removal/installationMazda 6 Service Manual: Tire Rotation
WARNING
Rotate tires periodically: Irregular tire wear is dangerous. To equalize
tread wear for maintaining good performance in handling and braking, rotate the
tires every 12,000 km (7,500 miles). However Mazda recommends to rotate every 8,000
km (5,000 miles) to help increase tire life and ...
Mazda 6 Service Manual: Operating Tips
Operate the climate control system with the engine running.
To prevent the battery from being discharged, do not leave the fan control
dial/switch on for a long period of time with the ignition switched ON when
the engine is not running.
Clear all obstructions such as leaves, snow and i ...