Subwoofer Box as a Spare? Volume Calculations + Build - CarAudioFabrication - YouTube
2006 Toyota Avalon Spare Tire Well Speaker Box Sub Subwoofer Enclosure – AK Audio
Amazon.com: American Sound Connection Universal Fit Single 10" Subwoofer Sealed Replacement Spare Tire Custom Sub Box : Electronics
Custom Invisible Subwoofer Enclosure for Your Spare Wheel Recess : 5 Steps - Instructables
For those of you who want more bass but don't want to sacrifice your spare tire or hatch space, I highly recommend this spare tire mount subwoofer : r/GolfGTI
Spare Tire Sub Box for Ultimo SC + Toolbox Amprack
Universal Fit Single 10" Subwoofer Sealed Replacement Spare Tire Custom Sub Box | 1X10-SPAREBOX