4K Ultra HD Dash Cams: What to Compare

No. Resolution is only one factor; sensor performance, lens quality, exposure, bitrate and compression all affect usable detail.

Use a card type, capacity and speed class approved by the camera maker. Continuous high-bitrate recording can be demanding, so compatibility matters.

Some do, but many reserve 4K for the front channel. Read the simultaneous recording specification rather than the largest resolution in the headline.

HDR can help balance bright and dark areas, but implementation varies. Check whether it works in the recording mode and frame rate you intend to use.