How to change the rear wheel on a Xiaomi scooter

Xiaomi's electric vehicle inevitably causes consumables to wear out, and the rear motor-wheel is one of the most heavily loaded components here, and not only does the tread become critically abrasive, but also punctures that are often hard to seal in cast chambers, and many owners are afraid to start repairing themselves for fear of damaging electronics or breaking the tightness of the hub.

However, the replacement process is feasible at home with a basic set of tools and an understanding of the design of the device: the rear axle of the scooter is connected directly to the electric motor, which requires special attention when dismantling the power wires, and the correct execution of all the steps will return the vehicle to the factory smoothness and safety of control.

In this article, we will take a detailed look at the algorithm of actions, from the preparation of the workplace to the final calibration of the gyroscope, and learn how to avoid common errors such as bearing skewing or damage to the insulation of the windings. It is important to understand that the quality of the installation directly affects the life of the entire power unit.

Diagnosis of faults and selection of components

Before disassembling, you need to determine exactly the nature of the damage. Most often, owners encounter sidewall cuts or multiple tread punctures that make further operation dangerous. If the camera is descenting slowly, but there is no visual damage, the problem may lie in the nipple or microcracks at the base of the rim.

When choosing a new tire or a one-wheel, it is important to pay attention to the marking and compatibility with your model. For the Mi Electric Scooter 1S and Pro 2, the dimensions may differ from the classic first-generation models. Using non-original or cheap counterparts can lead to rapid wear and tearing or even rupture of the rubber at high speed.

⚠️ Warning: Installing too rigid single wheels ("leathers") of poor quality often leads to vibrations that destroy the frame and electronic components of the scooter.

It's also worth assessing the condition of the bearings, and if you hear a hum or a backlash when you're spinning the wheel at weight, you should replace them immediately while the knot is dismantled, and if you have a good closed bearing, you can have a long life and no extraneous noise when you're driving.

Tools and workplace preparation required

Successful rear wheel replacement requires a specific set of tools that should be prepared in advance, and if you don't have the right gear, you can break the bolt edges or damage the plastic parts of the body, and the workplace should be well lit and the surface protected from scratches.

The main list of equipment includes powerful cutters or bokores to remove the old tire, if you change only rubber.To work with the electric part indispensable will be a soldering iron with a thin sting, solder and shrinkage to insulate the contacts.

• 🔧 Set of hexagonal keys (basic dimensions 4 mm and 5 mm)
• ✂️ Powerful bokosnikov or scissors on metal for cutting old rubber
• 🔨 Plastic blade or mount for tyre boarding
• 🔌 Solding iron, solder, flux and shrink tubes
• 🧤 Gloves to protect hands from sharp edges of rim and dirt

Pay special attention to the cleanness of the hands and tools, because it is unacceptable to get metal shavings inside the motor wheel. If you change the wheel assembly, the process is simplified, but requires care when connecting the connectors.

Dismantling the old wheel and access to the engine

Removing the rear wheel starts with removing the engine cap and turning off the power wires, first you need to flip the scooter and unscrew the screws that hold the engine cover, and be careful, because there may be latches inside that are easy to break when you sloppy jerk.

Once the lid is removed, the engine phase wires are accessed, which must be carefully soldered out of the controller board or disconnected if the model pre-installes a connector connection inside the hub. Most Xiaomi models have wires soldered directly, requiring a soldering iron.

Procedure for disconnecting the wires:


Black wire (phase 1)




Green wire (phase 2)




Blue wire (phase 3)

It's important to remember or photograph the wires so that you don't mix up the phases when you build them, otherwise the engine will jerk or hum. Then you unscrew the wheel axis and it's removed from the pendulum. If you change the rubber only, you now have to remove the old tire by cutting it with the fork-threshers in a circle.

Replacement technology for tires and cameras

Installation of new rubber on the cast wheel is the most physically time-consuming step, heated in hot water or hair dryer tire becomes more elastic, which makes it easier to pull on the rim, start to put rubber on the opposite side of the nipple, gradually squeezing the sides.

If you use an inflatable camera, it should be slightly pumped before installation to avoid pinching and crease formation. After mounting the tire, make sure that the nipple is exactly perpendicular to the rim. The skewed nipple can be ripped off when braking.

When using whole wheels, the method of freezing or lubricating with soap solution is often used to facilitate installation. However, excessive force during installation can deform the disk, so it is important to follow the measure. After installation, be sure to check the beat of the wheel.

💡

Heat the tire with a building hair dryer evenly throughout the circle, but do not keep the flow of hot air at one point for longer than 5-7 seconds, so as not to melt the rubber mixture.

Assembly of the unit and connection of electricians

Once the rubber is installed, the wheel is mounted back into the pendulum. When twisting the axle, make sure that the washers and bushings are in their places, otherwise there will be skewing and rapid wear of the bearings. The axle tightening must be done with the force prescribed by the manufacturer to exclude backlash.

The most important thing is to solder the phase wires, use a quality solder with a roanifoil, providing a reliable connection, be sure to insulate the soldering places with thermal shrinkage, warming it to a tight fit of the wire, poor contact will lead to heating and melting of the insulation.

⚠️ Warning: Do not allow soldering to hit plastic parts of the connector or inside the motor. Short circuit phases can disable the controller instantly.

The wires are carefully placed in the channels inside the engine lid so that they don't rub over as they rotate, the lid is placed in place, and the screws are twisted cross-cross for even fit. If you use a sealant for the lid, give it time to dry before the first trip.

💡

The quality of soldering and insulation of wires is more important than the speed of assembly - this is where problems often arise after repair.

Calibration of the gyroscope and checking the performance

After the wheel is replaced, especially if the axle or pendulum is removed, the gyroscope calibration may be lost, which causes the scooter to "go away" at start or not develop full speed.

The calibration mode is usually activated through a combination of buttons on the display or through a special application. In the process, the scooter will emit audible signals, confirming the position reading. Do not move the vehicle until the process is complete.

• 🛑 Place the scooter on a flat floor
• 🔌 Turn on the power and press the gas. + brake (or use the application)
• ⏳ Wait for the flashing of indicators (usually) 5-10 seconds)
• ✅ Turn off the scooter and turn it back on for inspection

The final test drive is best done on a safe site without active traffic. Pay attention to smooth acceleration and no vibrations. If all stages are completed correctly, your Xiaomi is ready for active use again.