Yes, but it's more complex than mechanical brakes. You often have to bleed the system or add fluid. Ideally done by a professional.
How do I adjust the brakes on an electric bike?
Good brakes are essential for your safety and riding comfort. On an electric bike, they are even more crucial because of the increased speed and extra weight.
Here you'll learn how to spot the first signs of malfunction and make simple adjustments yourself to ensure smooth, safe and responsive journeys.
Why well-tuned brakes are essential on an electric bike
Brakes play a key role in :
- Control your speed
- Safe manoeuvring
- Ride with confidence, even in difficult conditions
Whether you ride an electricMTB or an urban bike, it's important to understand the difference between mechanical and hydraulic brakes, and how to adjust them.
Types of braking systems on electric bikes
Today, disc brakes are the most widely used on electric bikes. The system consists of :
- A metal disc (rotor) attached to the wheel
- A caliper with pads that pinch the disc for braking
Advantages of disc brakes :
- More braking power than rim brakes
- Consistent performance, even in the rain
- More reliable at high speeds
There are two types of disc brakes:
- Mechanical brakes
- Hydraulic brakes
When should you adjust your brakes?
Poorly adjusted or loose brakes reduce braking power and increase the risk of an accident. Here are some warning signs:
- Spongy lever: if the lever is soft, there may be air in the system or a loss of pressure.
- Longer lever travel: if you have to pull hard on the lever before the brake acts.
- Worn pads: if they are less than 1 mm thick or unevenly worn.
- Loss of braking power: you have to brake longer to stop.
- Whistling or rubbing: abnormal noises or resistance to pedaling often indicate misalignment.
How to adjust your electric bike's brakes yourself
No need to be an expert: basic maintenance is sufficient every few months, depending on the type of brake.
Mechanical disc brakes
Operated by steel cable. Adjustable via :
- Barrel adjusters (small adjustments near the lever)
- Cable tension at stirrup
Caution: over time, cables become longer, dirtier or more bent. Replacing them is often simple and inexpensive.
Hydraulic disc brakes
Use brake fluid. Very powerful, but a little more complex.
Frequent problems: limp lever or lack of power → often air in the system.
Solution: perform a brake bleed
Unless you're an experienced do-it-yourselfer, we recommend you call in a professional mechanic. Hydraulic brakes require precision and the right tools.
If you want to try it yourself :
- Start by checking the brake fluid level
- Refill if necessary with suitable fluid (e.g. mineral oil)
Bicycle brands with powerful braking systems
At Upway, you'll find electric bikes equipped with high-performance hydraulic disc brakes, often standard on quality models.
Some reliable brands :
In short: what to look out for?
- Check your brakes every few months
- Look out for signs such as noises, low power or spongy levers.
- Hydraulics = more complex → best to leave the bleeding to a pro
- Stay alert when riding an e-bike fast: good brakes make all the difference
Video: do-it-yourself brake adjustment
Watch this video and follow the steps.
Frequently asked questions
Can hydraulic brakes be adjusted?
What pressure should be applied for good braking?
Enough so that the brake reacts quickly, but without constantly rubbing against the disc. When in doubt: test and adjust gradually, or consult a repairer.
How do I tension the brakes on an electric bike?
Mechanicals : retension the cable via the barrel adjuster or directly to the bracket
Hydraulic: adjustment via hydraulic pressure → often requires draining or refilling the fluid