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We will need to change brake pads after thousands miles of driving, and actually you can do that yourself without visiting the dealer’s. Doing it yourself also will save you a lot of money. Even if you're not interesting in doing this yourself, knowing what's involved makes it easier to understand what your mechanic tells you. I will use my 2013 BMW 320D E70 FL as example here, and a Topdon Artpad to do the brake pad matching(old tightness vs new one). My steps: 1. Ignition ON, but don’t start the engine. 2. Choose Brake Pad Matching module in Artipad. 3. Choose brand “BMW” 4. Tap on Manual Select 5. Tap on Brake Pad Replace 6. Choose 5 series 7. Choose 5’_GT(F07) 8. Now the display showing “ignition ON”, tap OK 9. Now we need to loosen the wheel cylinder, tap that option on screen, this is a very important step, you could only take off the brake pad after it gets loose. 10. Set parking brake OFF according to display prompt, then tap OK. 11. Step on brake paddle and press and hold parking brake button for 3s, check if your wheel cylinders are loose. 12. Ignition OFF for 30s before you actually change the brake pad, when you finish that, tap OK on screen. 13. Now we are ready to tighten the wheel cylinders, choose that option on screen. 14. Again, step on brake paddle and press and hold parking brake button for 3s and you can here the sound. 15. Set parking brake OFF till you here the sound again. 16. This is a repeated process, so step on brake paddle and press and hold parking brake button for 3s and you can here the sound. 17. Now the display saying that brake pad matching are succeed. It is very necessary to use a professional tool when replacing brake pad, it’s not a pure mechanical process, rather that just disassemble the wheel, it’s involving ECUs of car. Hope this illustration above could help you understand more.

I modified my Tesla Model 3 by myself and share the installation process in the following content, including some details need to pay attention, how to choose the product, knowledge about wheel spacers. The brief video record the process of installation. https://www.youtube.com/watch?v=E5KKsBOM9y8 Welcome your friendly comments. In the material, I found two materials are common and many people choose one of them. 7075-T6 and 6061-T6, forged aluminum alloy, I chose 7075-T6 because the quality will better than 6061-T6, also the wheel studs and nuts I choose are the same brand, because the brand carve the logo on the product. The wheel studs are 12.9 grade SCM440 material and the wheel nuts are 40Cr material, I chose bonoss company’s forged active cooling wheel spacers. For the front wheel, I chose 18mm. Meanwhile, for the rear wheel I chose 25mm. It’s up to yourself, different sizes are ok. Lift up the car with jack, remove the wheel bolts and uses rust remover and abrasive paper to clean up the wheel hub to make sure the wheel spacers fit perfectly. Install the wheel nuts and wheels back. Remember to install and remove the wheel nuts diagonally because it force uniform. As a example of Tesla Model 3, the recommended torque is 140Nm. The contrast pictures: After installation, something will change so I will go to check my car regularly. Thanks for reading this passage.

Take a example of install wheel spacers from BONOSS company on Tesla. https://www.youtube.com/watch?v=E5KKsBOM9y8&t=62s When we modify our cars, which keywords will appear in your mind, wheel spacers? bodykit? hellaflush? wheelhub? exhaust? turbo charger? rim? etc... Gradually, modifying cars has changed from love to a popular culture. The modifying culture vary from region to region. The high horsepower of American cars, the hellaflush of Japanese , and the ECU calibration of European . In the communication, we found that modified parts are constantly changing. Local upgrades and diversified functions meet more needs of modified players. I heard a car product that has become very popular recently. Although everyone may have their own likes and dislikes, I will analyze this product from my own perspective.It’s the product from BONOSS company: BONOSS Forged Active Cooling Wheel Spacers (Formerly BLOXsport). Its new function: Active Cooling, it’s a new function, for a long time, no matter who install the wheel spacers, the main function is to widen the wheelbase to improve the handling, or to install wheel spacers when refitting the wheel hub and brake system. But the function is still single so that I can't help thinking about how to buy the wheel spacers in a reasonable price with additional value. So how is the function of active cooling work? According the introduction, the design principle can make use of the rotation of the wheel spacers to allow the external cold air to flow efficiently and continuously inside the wheel spacers to take away heat. In terms of the principle, it achieves the target that active cool the brake system, improve braking efficiency and reduce the risk of driving. Of course, there are many more about this product I haven’t mentioned, including its quality, other design details, about these, you can leave your questions or opinions below.