Frequency should drive placement
Weekly items belong on walls or shelves. Seasonal decorations, empty coolers, and camping gear can work overhead when they are light enough to handle safely.
Clearance is a moving measurement
Measure the vehicle with roof accessories, the open garage-door path, opener hardware, lights, and the rack plus its stored load. Use the smallest remaining clearance, not ceiling height alone.
The ceiling is not just another shelf
Overhead racks must fasten to suitable framing using the manufacturer’s specified pattern and hardware. If joist direction, material, or condition is uncertain, pause and consult a qualified installer.
Most garages need both, not one or the other
Treat this as a sequencing question rather than a single choice. Install floor and wall storage first since they are used constantly, then add ceiling racks only for the overflow that is genuinely light, bulky, and infrequently needed.
Your next step
Use these guides to compare the system types and plan the next zone without losing sight of access, clearance, and installation requirements.