Owners of popular electric vehicles often wonder what pressure should be in the tires of their device. For the Xiaomi Mi Electric Scooter 1S, this parameter is critical, as it directly affects the safety of movement, comfort and, importantly, the real battery range. Inflated wheel can lead to rapid wear of rubber or even damage to the camera.
The manufacturer has a clear specification, but many users ignore this data, relying on “neighbor experience” or personal feelings. In this article, we will discuss in detail how much atmospheres (or PSI) need to be pumped into the pneumatic tires of this model, and why deviation from the norm in any direction can be dangerous for your trip.
It’s worth noting that the Xiaomi M365 and its updated version 1S have identical chassis maintenance requirements. So if you’re looking for information for the base model, the data below will be completely relevant to you. Let’s get into the numbers.
Recommended pressure standards according to specification
According to official documentation provided by the manufacturer, there is a strictly defined pressure range that provides the best performance. 1S maximum permissible pressure is 50 PSI (In terms of the more familiar units of measurement, this is roughly the same as the equivalent of a pound per square inch. 3.4-3.5 Bar (atmospheres).
However, it is not always advisable or even safe to swing the wheels to the point of 3.5 atmospheres. Engineers recommend keeping the operating pressure in the range from 3.0 to 3.5 Bar. This is the "golden mean" that allows you to cushion roughness of the road and saves the camera from tears when you fall into pits. If you plan to drive on a perfectly smooth asphalt, you can navigate to the upper limit.
It is important to understand the difference between maximum and operating pressure: the inscription on the sidewall of the tire (Max 50 PSI / 350 kPa) indicates the maximum strength, not comfortable driving. Exceeding this value, even by 0.5 atmosphere, significantly increases the risk of explosion of the chamber, especially in hot weather when the air inside expands.
⚠️ Warning: Never pump cold scooter tires above 3.5 Bar. When moving, the tire heats up and internal pressure rises. Exceeding the limit of 50 PSI It can cause instant camera rupture and loss of control.
Effect of pressure on mileage and speed
One of the main reasons why users monitor the condition of the wheels is to increase autonomy. Tyre pressure directly affects the rolling resistance ratio. The more the tire is pumped, the less contact area it is with the road and, consequently, less energy is spent on overcoming friction, which allows the electric motor to operate in a more economical mode.
If you drive on flat wheels (less than 2.5 Bar), you will notice that the top speed will drop and the battery will discharge noticeably faster.In some cases, the difference in mileage between wheels pumped to 2.0 Bar and 3.5 Bar can reach 15-20%.For the Xiaomi 1S model, whose claimed mileage is about 30 km, this is a significant loss.
On the other hand, an over-pumped wheel (close to the 50 PSI limit) will make the ride extremely tough.You will feel every pebble and crack on the asphalt, as there will be virtually no cushioning.In addition, the pumped tire will wear the central part of the tread faster, which reduces the life of the rubber.
Dependence of pressure on weight of the rider
There is no universal "3 atmospheres for all" value, because the load on the wheels varies from person to person. The optimal pressure should be determined based on the weight of the rider. The more weight, the higher the pressure should be to avoid deformation of the wheel and failure of the camera on the rim (so-called "snake bite").
For fine-tuning, use the following matching table, which is an averaged recommendation based on the experience of operating the Mi Electric Scooter in different environments.
| Rider weight (kg) | Recommended pressure (Bar) | Recommended pressure (PSI) | Characteristics of driving |
|---|---|---|---|
| Up to 60kg | 2.5 - 2.8 | 36 - 40 | Comfortable, urban |
| 60 - 80 kg | 2.9 - 3.2 | 42 - 46 | Mixed |
| 80 - 100 kg | 3.3 - 3.5 | 48 - 50 | Dynamic, maximum loading |
| More than 100 kg | 3.5 (Max) | 50 (Max) | Just flat asphalt. |
If your weight is at the upper end of the range, it is critical to check the pressure before each long trip. Under the weight of a heavy rider, air can gradually penetrate the rubber micropores or valve faster than usual.
Instructions: How to properly check and pump the wheels
The Xiaomi 1S wheel maintenance procedure is fairly simple, but requires the right tool. You'll need a car pump (possibly a compact electric one) and a quality pressure gauge. The sensors built into some pumps often have a large margin of error, so it's best to double-check the readings with a separate device.
Before starting the procedure, make sure that the scooter is on a flat surface and the wheels are cooled. If you just arrived from a walk, let the technicians stand for 15-20 minutes. Heated from friction against the road wheel will show falsely inflated pressure, and after cooling it will be below normal.
☑️ Checklist for wheel checklist
The pumping process itself is as follows:
- 🎈 Remove the plastic cap from the wheel nipple (usually black).
- 🔌 Tightly place the pump hose on the nupple, make sure the connection is sealed, or you won't be able to reach the pressure you need.
- 💨 Start pumping air in short series, periodically checking the manometer readings.
- 🛑 Once the arrow reaches the desired value (e.g. 3.2 Bar), stop the air supply.
Once completed, quickly remove the pump and twist the cap. Mud and dust should not get inside the nipple, as they can disrupt the sealing of the valve. If the cap is lost, it is better to buy a new one than to ride without it.
Seasonal features and temperature regime
The ambient temperature has a direct effect on tire pressure. It's a physical law: when you heat it expands, when you cool it shrinks. So in winter and summer, you have to take different approaches to pumping the wheels, and ignoring that fact is a common cause of camera problems.
In summer heat, when the asphalt is heated to +50°C and above, the pressure in the wheel can rise by 0.3-0.5 Bar relative to the cold state. If you pump the wheels to a maximum (3.5 Bar) in a cool garage and then go out in the sun, the risk of bursting the camera will become critical. In hot weather, it is recommended to keep the pressure closer to 3.0-3.2 Bar.
In winter, the situation is reversed. In the cold, the air compresses, and the pressure drops. If you pump the wheels in a warm room to 3.0 Bar, then outside at -10 ° C, the pressure can drop to 2.5 Bar. This will lead to a deterioration of the coastline and increase the risk of puncture. So in winter, you need to pump the wheels a little harder, focusing on the upper limit of the permissible range, but not forgetting the elasticity of rubber, which decreases in the cold.
What happens if you drive on flat wheels?
Frequent errors and warnings
Many users make common mistakes that shorten the life of the Xiaomi 1S chassis. One of the most common is using air from compressors at gas stations without a pressure gauge. Such compressors often give a powerful jet, and it is easy to pump a small scooter camera in a couple of seconds.
Another mistake is to ignore the condition of the nipples, and over time, the rubber base of the nipple can dry out or crack, and if you notice that the wheel is poisoning the air in the area of the nipple, it needs to be replaced, which is a cheap part, but if it breaks, it can cause you to push the discharged scooter home.
⚠️ Warning: Do not use helium or nitrogen to pump tires unless absolutely necessary. Conventional air is quite suitable. Using third-party gases can change the characteristics of the rubber and lead to unpredictable behavior of the tire when heated.
It is also worth remembering the maximum load of the scooter itself. Even if you pump the wheels up to 50 PSI, this will not allow the Xiaomi 1S to safely carry two adults or heavy loads.The maximum load is specified in the passport (usually up to 100 kg), and exceeding it is dangerous regardless of the pressure in the tires.
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Tip: Always carry a compact pump or mini-compressor. Even a quality camera can accidentally punctured with a nail or a sharp stone, and the ability to pump the wheel will save your trip.
How to extend the life of cameras and tires
Regular maintenance is the key to the longevity of your transport. In addition to controlling pressure, pay attention to the appearance of the tread. If you notice that the rubber has become too smooth or cracks ("web"), it is time to change the tire. Old, cracked rubber is worse at keeping pressure and more prone to tears.
Use special sealants for electric vehicles. The liquid, poured into the chamber through a nipple (pre-twisting the spool), is able to tighten small punctures up to 2-3 mm in diameter during the ride, this is especially true in cities where broken glass and spikes are often found on the roads.
Keep the scooter in the right conditions. If you remove the Xiaomi 1S for the winter, don't leave it on flat tires. Prolonged tire deformation can lead to clamps that won't spread out. It's better to hang the scooter or put it on a stand so that the wheels don't touch the ground, and keep the pressure at 3.0 Bar.
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The optimal pressure for Xiaomi 1S is 3.0-3.5 Bar. Regular check (every 1-2 weeks) and pressure adjustment depending on the weight of the rider and air temperature will ensure maximum mileage and safety.