Mazda RX-8 Workshop Manual page 2878

WARNING:
If the air bag module is not properly installed to the tire, serious injury may occur when
the module is operated (deployed). When installing the air bag module to the tire, make
sure the padded surface is facing the center of the tire.
4. Stack the tire with the side air bag module on top of two tires without wheels. Stack a tire without a
wheel on top of the tire with the side air bag module, and then stack another tire with a wheel on the very
top.
5. Secure the tires with wire.
6. Connect the SST (Deployment tool) to the SST (Adapter harness).