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SD Cards for Dash Cams: Capacity and Compatibility

Use the card type, speed class and capacity range stated for your exact camera. An endurance-rated card is designed for repeated video writing, but compatibility still comes first.

An SD card for dash cam use must cope with continuous overwrite cycles, heat and sustained video recording. Capacity alone is not enough: the camera manual may specify microSD format, speed class and a maximum supported size.

SD Cards for Dash Cams: Capacity and Compatibility

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Questions before you buy

What size SD card for dash cam use is best?

Choose within the minimum and maximum capacity supported by the exact model. Larger compatible cards retain more loop footage, especially when recording two channels or higher resolution.

Will a dash cam work without an SD card?

Many models cannot record normal journey footage without a compatible card, although some include internal storage or cloud functions. Check what is supplied and required for the exact camera.

Do dash cams need special SD cards?

A high-endurance microSD card is usually the sensible type for repeated recording. It must also meet the speed and capacity requirements in the camera manual.

How often should a dash cam SD card be formatted?

Follow the camera manufacturer's interval and use the in-camera format function where instructed. Back up any wanted clips first because formatting erases recordings.