Storage
Best microSD Cards for Dash Cams
The SD card is the most important accessory and the one most often bought wrong. The right card records reliably for years; the wrong one fails quietly.
Choose high-endurance
Dash cams write continuously, a workload ordinary cards are not built for. Cards labeled high-endurance or specifically for dash cams and surveillance are designed to survive constant overwriting.
Mind the speed class
Look for a U3 or V30 rating so the card keeps up with 4K recording without dropping frames. Slower cards can cause errors or gaps.
Pick a sensible size
128GB suits most single-channel setups; go larger for dual channels or a longer parking-mode buffer. Stay within the maximum capacity your camera supports.
A real example to check against
The SanDisk 128GB High Endurance microSD illustrates the spec profile to look for: C10, U3, V30 rated, 128GB, rated for 4K UHD recording.
Frequently asked questions
Can I use a regular microSD card in a dash cam?
You can, but it is not recommended for continuous use — regular cards wear out faster under constant loop recording and can fail silently. A high-endurance card is worth the small extra cost.
What speed class do I actually need?
U3/V30 is the safe baseline for 4K recording. Lower speed classes can work for 1080p but risk dropped frames at higher resolutions.