Choose a bike radar suited to your daily rides
Compare rear detection, alerts and bike radar compatibility to identify models that work with your equipment.
Bike radar: which model should you choose?
The 6 criteria that set bike radars apart, in the order to consider them, each with a guide backed by figures.
Our latest reviews of the best bike radars
Every model is compared on what really matters: overall score, actual price, pros and cons.
Garmin Varia RTL516
Overall rating
Garmin Varia RearVue 820
Overall rating
Garmin Varia RearVue 820 StVZO
Overall rating
Garmin Varia RCT715
Overall rating
Our top three
Sigma RECO 80 LINK
Our analysis and reviews by By bike computer compatibility
Our guides and reviews to help you choose your bike radar
What should you check if your bike radar’s rear light is off?
Your radar seems active, but its rear light stays off? Here are the checks to help distinguish a settings issue from a problem that needs reporting.
How to choose a bike radar based on its connectivity
Understand bike radars before choosing
Bike Radar Picks is a comparison site dedicated to bike radars, devices that alert you to vehicles approaching from behind. We analyse manufacturers’ published specifications, manuals and buyer reviews to explain the differences between models.
Our comparisons distinguish between radar, rear light and camera functions, where a camera is included. They also explain the requirements for connecting to a bike computer or phone, mounting options and the documented limitations of each device.
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What should you look for when choosing a bike radar?
The advertised range does not tell you everything about detection. Also consider the detection angle, tracking of multiple vehicles and the stated limitations when their speed is close to yours. Then check how alerts reach you: a display on a compatible bike computer, an audible signal or a mobile app. An ANT+ or Bluetooth connection alone does not guarantee that every function will work with your equipment.
The mount must suit the shape of your seatpost and keep the radar unobstructed, with no bag in front of the sensor. Compare battery life for the mode used, the charging connector and the water protection rating. For models with a light, examine the lighting modes and their compliance with French regulations. A radar supports your awareness without replacing a visual check before a manoeuvre.
Our reviews are independent: no brand pays for its ranking. To learn more, exploreOur methodology detailed and who we are. You can also browse our full bike radars comparison.