For the price of a tank of gas, having a RIM4K in your windshield is infinitely better than having no camera at all.
Many cheap dash cams use lithium batteries that swell up in summer heat. The RIM4K units I’ve seen use a supercapacitor. This is a huge win. It handles 100°F heat without melting down. rim4k.
Since “Rim4k” isn’t a widely known product or standard term, here are the most likely interpretations and the corresponding feature you might be looking for: For the price of a tank of gas,
This is where the budget nature shows. At night, the 4K resolution helps, but the aperture (f/1.8 usually) isn't wide enough to compete with premium sensors. You will see "motion blur" on passing cars. You can tell a car hit you, but you might not read the plate if they speed off. This is a huge win