1. Remove the trunk lid trim. (4SD)
2. Remove the liftgate lower trim. (5HB)
3. Remove the bolts.
4. Disconnect the high-mount brake light connector. (4SD)
5. Remove the rear spoiler.

6. Install in the reverse order of removal.
Rear finisher removal/installation
Roof carrier bracket removal/installationMazda 6 Service Manual: Tire Inflation Pressure
WARNING
Always inflate the tires to the correct pressure: Overinflation or
underinflation of tires is dangerous. Adverse handling or unexpected tire failure
could result in a serious accident.
Use only a Mazda-genuine tire valve cap: Use of a non-genuine part
is dangerous as the correct tire ...
Mazda 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 ...