You can have excellent lighting on your e-bike and still see less than you need to in the dark. This often happens when the headlight is positioned too high (dazzling oncoming traffic) or, conversely, too low (you’re essentially looking into a narrow beam of light in front of your front wheel). Especially in the city, with wet pavement, streetcar tracks, and unexpected pedestrians crossing the street, a properly adjusted headlight makes all the difference.
This guide isn't about “mandatory lights,” but about adjusting your headlight so that you can see better and others can continue to cycle and drive comfortably. It usually takes ten minutes, and you'll benefit from it every evening.
Why Headlight Alignment Is More Important Than Many People Think
An e-bike headlight is often more powerful than the light on a regular bike. That's great for your own visibility, but it also means that even a slight difference in height can quickly cause significant glare.
With the right adjustment, you’ll get a smooth beam of light with a clear “light boundary” on the road. You’ll spot potholes, posts, and road markings sooner, without blinding anyone with a white wall of light.
Three Common Problems
- Too high: Oncoming drivers squint, motorists are blinded by a bright glare, and you think you have “good lighting” when in fact your light is mainly shining into the distance.
- Too low: You can see a bright spot right in front of your tire, but you can't see what's ahead, so you have to brake harder when you encounter obstacles.
- Italics: The beam points to the left or right, which means that part of your driving lane isn't properly lit and you unintentionally blind another driver.
What You Need to Properly Adjust Your Headlight
You don't need a workshop. A wall, some tape, and a measuring tape will get you a long way.
- A flat surface (sidewalk, garage floor, or parking lot)
- A straight wall or garage door
- Tape measure or tape measure
- Painter's tape or masking tape
- Allen wrench or screwdriver (depending on your lamp bracket)
Do you often ride with children or extra luggage? If so, it’s a good idea to take a look at your overall setup and accessories, because weight affects your bike’s stability. To do that, check out the accessories shop.
Step-by-Step: Adjusting an E-Bike Headlight (Wall Method)
This method works for virtually any e-bike with a fixed headlight, including those with LED daytime running lights and a bright low beam. The goal is to achieve a beam pattern that illuminates the road well, with a clean cutoff line.
1) Set your e-bike to normal riding mode
Adjust the lights the same way you actually ride your bike. An empty bike can stand upright, but with a bag or a child on the back, the front end lifts up and your light suddenly seems too high.
- Inflate your tires to the correct pressure.
- Put your usual gear on the bike (bag, crate, lock).
- Sit on the saddle yourself, or ask someone to hold your bike upright with your weight on it.
2) Measure the height of the center of the headlight
Measure from the floor to the center of the lens. Mark a horizontal line on the wall at the same height.
That line is your reference point. From here, you'll determine the correct “slope” of the bundle.
3) Park the bike 5 meters from the wall
Five meters is a good distance: close enough to see exactly what you're doing, far enough to assess the lighting conditions. Position the bike upright and point it directly at the wall.
4) Determine the guideline for the light boundary
As a rule of thumb, the light boundary at a distance of 5 meters should be a few centimeters below the lamp’s height line. This prevents glare while still providing good illumination on the road.
A practical guideline: add a second row of tape 5 to 10 cm below the first line (5 meters away). Aim the sharp cutoff of your headlight at that lower line.
5) Adjust the lamp in small increments
Locate the headlight mount. There is often a single bolt that allows you to adjust the angle. Loosen it, tilt the headlight very slightly, tighten it, and check again.
- Move it just a little bit at a time; tilting it 2–3 mm makes a big difference.
- Also check to make sure the lamp is straight (not tilted to the left or right).
- Be aware of any play: if the bracket can move, your adjustment will be lost later on.
6) Take a short test drive and check for ‘glare’
When riding in the dark past parked cars, watch out for reflections in mirrors and windows. If necessary, ask someone to stand across from you at bike height to check that the light isn’t shining in your eyes.
Adjusted for city driving with LED daytime running lights
Many modern e-bikes have LED daytime running lights that are always on, and a bright low beam for riding at night. The daytime running lights are intended to make you visible, not to illuminate the road.
The adjustment mainly affects your low-beam headlight. However, you’ll also notice a difference during the day: a headlight that’s aimed too high can be annoyingly bright for other cyclists in narrow streets, even in daylight.
If you want to be extra critical
- You'll be riding a lot on narrow bike paths with oncoming traffic.
- You have a powerful headlight (high lumen output) or a focused beam.
- You often drive on wet roads; glare becomes a problem more quickly in those conditions.
Common Mistakes When Adjusting Headlights
Most “poor” lighting isn’t caused by a faulty light bulb, but by a minor mistake during installation or use. These are the classic examples.
Mistake 1: Adjusting the bike without putting your weight on it
If you adjust the headlight while the bike is unloaded, it’s often just a little too high once you’re on it. It feels like you can see more, but it mainly just casts stray light into the distance.
Mistake 2: Pointing the light too close to the fender
Then you see a bright patch of asphalt right in front of you, but you don’t have enough “reaction time” further ahead. In the city, that causes anxiety: you brake too late, and your eyes keep searching.
Mistake 3: Forgetting that the load changes the angle
A child on the back seat, a full bag, or a cargo bike setup can affect the balance. If you often ride with a load, be sure to check your bike’s alignment in those situations.
Mistake 4: Skewed light pattern caused by a twisted bracket
After bumping into a post or following maintenance, a headlight may become slightly misaligned. It may seem like a minor issue, but you’ll actually lose some light along your line of sight.
Quick check without a wall
Don't feel like using the “wall method” or don't have room for it? You can still quickly check if your headlight is "roughly aligned.".
- On a dark road, check where the brightest part of your beam ends. Ideally, you should be able to see the road clearly for about 10–20 meters, without the beam “floating” upward.
- Ride past a cyclist coming toward you (at a slow pace) and watch their reaction. If they squint or put their hand over their eyes, your light is too high.
- Check your own shadow: if you see a sharp shadow at eye level for others, the beam is often too high or there is a lot of stray light.
Laws and Guidelines: What Is Permitted, and What Is Prudent?
The laws regarding bicycle lights are primarily functional: you must be visible and have a white or yellow front light. The law is less specific about exact adjustments, but blinding other road users is considered unsafe behavior in traffic.
For the basic rules regarding bicycle lights, please refer to the explanation provided by the Dutch government: Bicycle Lights and Rules (National Government).
When Adjustment Isn't Enough
Sometimes you adjust the settings properly, but the image still looks messy. In that case, there's often something else going on.
- The lens or lamp glass is dirty: A thin layer of dirt causes glare and reduces contrast. Clean it with a soft cloth.
- The bracket has play: The lamp keeps sagging over bumps. Check the bolts and washers.
- Incorrect lamp holder: Some headlights have separate settings for “low beam” and “high beam.” Check your owner’s manual.
- Steering or fork play: When your front end moves, your light moves with it. It feels like a flicker on the road.
If you drive a model that covers a lot of daily mileage in the city, it’s worth including these kinds of items as standard in your routine inspection. Also check out the types and setups STOER offers on the page bikes.
Bonus tip for cargo bikes and heavy e-bikes
On heavier e-bikes and cargo bikes, the front end may be positioned differently when loaded than on a regular city bike. The headlight is often mounted lower, and the beam may be directed differently due to the cargo box or accessories.
If you ride a cargo bike (for example, to transport children or for work), adjust the settings for the situation you use it most often: with children in the cargo box or with your usual load. The STOER CargoX is often used intensively in city traffic, and that's exactly when a stable, non-glare beam is pleasant for everyone around you.
Practical Tips: How to Keep Your Lights Securely in Place
A headlight that’s aligned properly today might be out of alignment a month from now due to a bump, vibrations, or maintenance. With this quick check, you can avoid not noticing the problem until someone gives you a dirty look.
- Check once a month or after a fall or tripping.
- Clean the lens while you're taking your bike apart anyway.
- Check to see if you often drive with other items in the car (winter coat, school bag, crate full of groceries).
Would you like someone to take a look at your lighting setup, assembly, or general safety check for city rides? Stop by a retail location via the STOER Bikes dealers for a quick check and advice tailored to your rides.
