Your Mazda has a temporary spare tire. The temporary spare tire is lighter and smaller than a conventional tire, and is designed only for emergency use and should be used only for VERY short periods. Temporary spare tires should NEVER be used for long drives or extended periods.
WARNING
Do not install the temporary spare tire on the front wheels (driving wheels):
Driving with the temporary spare tire on one of the front driving wheels is dangerous. Handling will be affected.
You could lose control of the vehicle, especially on ice or snow bound roads, and have an accident. Move a regular tire to the front wheel and install the temporary spare tire to the rear.
CAUTION
Drive carefully.
To remove the spare tire
1. Lift the trunk mat.

2. Turn the spare tire hold-down bolt counterclockwise.

To secure the spare tire
Store the spare tire in the reverse order of removal. After storing, verify that the spare tire is stored securely.
Jack
Changing a Flat TireMazda 6 Owners 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 ...
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Caution
Performing the following procedures without first removing the ABS
wheel-speed sensor may possibly cause an open circuit in the harness if it
is pulled by mistake. Before performing the following procedures, remove the
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