Can a punctured BMW run-flat tire be repaired?

2 Answers
JosieLynn
07/24/25 11:29pm
BMW run-flat tires can be repaired if the tire does not have a fatal wound, but the repair may affect the tire's performance. The advantage of BMW run-flat tires is that they can ensure normal driving even without tire pressure. Even if the tire is completely depressurized, the car can still maintain a speed of 80 kilometers per hour and continue to drive for about 150 kilometers. BMW is a German luxury car brand founded in 1916, headquartered in Munich, Bavaria, Germany. Its vehicle series include the i, X, Z, and pure number 4 models, as well as the 1, 2, 3, 4, 5, 6, 7, and 8 series, along with the M series, which is an improved version based on these series.
Was this review help?
17
4
Share
DelMary
08/10/25 3:23pm
I once experienced a puncture with BMW's run-flat tires. These tires are quite uniquely designed with reinforced structures inside, allowing you to drive slowly for about 50 kilometers after a flat, preventing immediate breakdown. If the puncture is in the middle tread area with a hole smaller than 5mm, professional shops can usually repair it using mushroom plugs or internal patches, which is cost-effective and convenient. After repair, the tire's performance is largely restored without affecting daily use. However, if the puncture is on the sidewall or edge where stress is high, repairs are prone to re-leakage or even deformation, posing too much risk—replacing the tire is safer in such cases. I always emphasize driving to a reliable repair shop promptly to check the damage depth, not delaying to avoid worsening the issue. The advantage of run-flat tires is buying time for a safe stop. Remember, avoid high-speed driving after a repair; stick to speed limits and take it slow—BMW's driving manual also reminds users of this.
Was this review help?
11
2
Share
Expand All
More Forum Discussions

Is a tire pressure of 1.9 normal?

A tire pressure of 1.9 is not normal and should be inflated as soon as possible. Low tire pressure increases the contact area between the tire and the ground and causes severe deformation of the tire sidewall. Generally, the recommended tire pressure for car tires is around 2 to 2.5 bar. According to the principle of thermal expansion and contraction, in summer, the tire pressure can be adjusted 0.1 to 0.2 bar lower than the normal value, while in winter, it can be adjusted 0.1 to 0.2 bar higher. When inflating tires, pay attention to the following: 1. Always use a pressure gauge to check the pressure to avoid over-inflation, which may cause the tire to burst; 2. After stopping the vehicle, wait for the tire to cool down before inflating; 3. If the valve stem and valve core do not fit properly, it will be inconvenient to inflate or measure the pressure; 4. The air being pumped in should not contain moisture or oil.
16
3
Share

How many items are there in the automatic transmission Subject 2 test?

The C2 Subject 2 test consists of 4 items: reverse parking, parallel parking, curve driving, and right-angle turning. Compared to the C1 manual transmission test, it lacks the hill start item. According to Article 25 of the "Regulations on the Application and Use of Motor Vehicle Driving Licenses" (Ministry of Public Security Order No. 123), starting from June 1, 2021, the C2 and C5 Subject 2 tests no longer assess the hill start and stop. Reverse parking is one of the more challenging items in the Subject 2 test, so many test centers arrange it as the first item. Drivers must follow the prescribed route and sequence. During reverse parking, crossing lines or stopping to adjust the position is not allowed. Parallel parking focuses on aligning the front line of the garage with the rear wheel, spotting the rear corner in the mirror, and maintaining the distance between the wheel and the left dashed line. After parking, there's no need to straighten the wheels, but don't forget to use the turn signal when exiting. The vehicle body must not cross the line after parking, and tires must not touch the lane boundary during movement. Curve driving, commonly known as the S-curve, is manageable for many students with good driving sense, indicating its moderate difficulty. However, some students misjudge line positions during the actual test, leading to immediate failure by crossing lines. The key to the S-curve is observing the position of the hood marker relative to the boundary line. Tires must not press the road edge line. Right-angle turning is relatively easier, essentially a simplified version of exiting in reverse parking. The method involves aligning the hood's horizontal line with the front line (just touching or slightly delayed). Ensure wheels do not press the road edge line. Notes: Typically, the C1 Subject 2 requires 16 hours of training, while C2 requires 14 hours. Completing the required hours is a basic requirement for taking the Subject 2 test. Training hours can only be increased, not decreased, and additional test items require corresponding extra hours. Each training hour is 60 minutes, with effective teaching time no less than 45 minutes. If you fail the Subject 2 test, you can retake it once. Failing the retest ends the current attempt, and you must reschedule the test after 10 days. If you fail five consecutive test attempts (including retests, totaling 10 attempts), all previously passed subjects will be voided, requiring you to restart from Subject 1. The driving test validity period is three years. All tests after Subject 1 must be completed within this period; otherwise, previous scores will be reset, necessitating re-enrollment and retesting from the beginning.
7
2
Share

How to replace the battery in an old Mercedes-Benz B180CDI key?

Method for replacing the battery in an old Mercedes-Benz B180CDI key: 1. Push the sliding switch on the back of the remote to remove the mechanical key; 2. Insert the mechanical key into the prying hole on the remote and push firmly to the bottom, the back cover will pop open automatically, then remove the back cover of the remote; 3. Take out the old battery from the remote key and quickly replace it with a new one, ensuring the new battery is installed within 30 seconds. The dimensions of the Mercedes-Benz B180CDI are 4359mm in length, 1786mm in width, and 1558mm in height, with a wheelbase of 2699mm. The car's multimedia features include GPS navigation system, LCD screen on the center console, built-in hard drive, car TV, and rear LCD screen.
14
1
Share

What Items Are Generally Replaced During Car Maintenance?

During car maintenance, the following items are generally replaced: engine oil, fuel, transmission fluid, brake fluid, power steering fluid, engine antifreeze coolant, windshield washer fluid, battery water, engine oil filter, air filter, fuel filter, cabin air filter, spark plugs, brake pads and rotors, clutch, wiper blades, sealing strips, timing belt, tires, battery, and other wear-and-tear or consumable items. Car maintenance refers to the preventive work of regularly inspecting, cleaning, replenishing, lubricating, adjusting, or replacing certain parts of the vehicle. The purpose is to maintain a clean appearance, normal technical condition, eliminate potential hazards, prevent failures, slow down the deterioration process, and extend the service life.
4
2
Share

What Causes Car Leakage?

The reasons for car leakage are: 1. Door leakage: usually caused by aging window waterproof strips or blocked door drainage holes; 2. Sunroof leakage: in most cases, it is due to clogged sunroof drainage holes; 3. Water accumulation in the trunk: generally caused by poor sealing of the trunk seal or poor sealing of the tail light seal; 4. A drainage hole on the fuel tank cap, as the fuel tank opening faces upwards, which can easily lead to water accumulation on the fuel tank cap. If your car is leaking, you can only go to a 4S store or a professional auto repair shop for treatment, letting the staff fix it. You can first clean the accumulated water inside the car with a dry towel or a water scooping tool, then repair the leaking part.
10
3
Share

How to Step on the Accelerator in an Automatic Transmission Car?

When stepping on the accelerator in an automatic transmission car, you should ease off the accelerator slightly each time the car reaches the corresponding RPM and shifts up a gear, then press the accelerator again. The main reasons are as follows: Some car owners believe that when driving on the highway, they only need to put the car in D gear and drive all the way. This understanding is very one-sided. Because there are also gears inside the automatic transmission, which need to be adjusted according to the vehicle speed, accelerator, and load. The process of adjusting gears requires response time. It will not immediately jump to a higher gear, nor will it immediately drop to a lower gear just because you reduce the pressure on the accelerator. Keeping the accelerator floored for a long time will cause wear and tear on the transmission.
14
2
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.