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
Custom Invisible Subwoofer Enclosure for Your Spare Wheel Recess : 5 Steps - Instructables
Rockville Rockghost Spare Tire Subwoofer if you need some extra bass and want to keep your hatch space free. : r/FiestaST
My sub-woofer inside the spare tire installation - Rennlist - Porsche Discussion Forums
JBL BassPro Hub | 11" (279mm) Spare tire subwoofer with built-in 200W RMS amplifier with remote control.
Spare tire subwoofer with built in amp in Civic ExL hatchback | 2016+ Honda Civic Forum (10th Gen) - Type R Forum, Si Forum - CivicX.com
JBL BassPro Hub (Spare Tire Subwoofer) | Jeep Renegade Forum
Spare tire subwoofer with built in amp in Civic ExL hatchback | 2016+ Honda Civic Forum (10th Gen) - Type R Forum, Si Forum - CivicX.com
Source Sennuopu Car Active 500W Spare Tire Active Bass Subwoofer 10 inch Auto Audio Subwoofer Speaker on m.alibaba.com
Bose Spare Tire Subwoofer in Toyota Avalon - YouTube
JBL Bass PRO Hub Spare tyre 11" Subwoofer DIY | Universalfuze
Amazon.com: American Sound Connection Universal Fit Single 10" Subwoofer Sealed Replacement Spare Tire Custom Sub Box : Electronics
My sub-woofer inside the spare tire installation - Rennlist - Porsche Discussion Forums
How To: Fiberglass Spare Tire Subwoofer Enclosure - EvolutionM - Mitsubishi Lancer and Lancer Evolution Community
JBL BassPro Hub | 11" (279mm) Spare tire subwoofer with built-in 200W RMS amplifier with remote control.
Subwoofer box using the spare tire | DIYMobileAudio.com Car Stereo Forum
Manufacturer professional wheel spare tire subwoofers sundown audio subwoofer car with 10 inch bass speaker - AliExpress