The F18 5 series has been bought for almost 9 years and has run 102000km mileage. On the way, I didn’t feel any problem or sound of the brake pads. The last time I changed the brake oil at the 4s store, the people in the store checked the condition of the car for me and said: the rear brake pads have reached the limit and the front wheel has just been changed. I said I haven’t changed, and several of their staff don’t believe it (in fact, I haven’t changed the car since I bought the car, but the front wheels are really thick). I just asked the price, and the four pieces on the back wheel are more than a thousand. Then watch short videos and articles about the maintenance of BMW or replacement of brake pads online. Seeing that the rear wheel brake pads of the F18 generation 5 series are made by Gaerfa, I want to find a store in Gaerfa. I found the GALFER flagship store on JD.com, reported the customer service chassis code, model and frame number, and immediately recommended a brake pad to me. Then, seeing that the activity is appropriate, the order is issued. According to the calculation, the price of ssss can be changed three times here.

The first installation was selected in Changxing, Zhejiang. JD.com app could not find the entrance for the reservation. In the morning, he went directly to the JD.com house to maintain the car and said to change the brake pads. A receptionist inside said very strongly: “you have to make an appointment first, and you won’t be free until 2:00 in the afternoon.” I said app has no entrance, he has a domineering look: impossible, only mobile phone reservation can do, three people a day, hurry up to make an appointment. I think he looks like “the best man in the world”. It’s 2:00 in the afternoon, and he wants to change places. Contacted the customer service of GALFER flagship store, immediately gave me a call, called JD.com backstage. Because I was going to Hangzhou immediately, I booked another store in Hangzhou for me. The second store is the Gucui Road store in Xihu District, Hangzhou, and the experience is very good. Although the store is small, it is clean and tidy, with comprehensive car repairs, car washing and cosmetology. After I took the package apart, I looked at everything inside and sent towels, gloves and brake oil.

There’s a lot of stuff in the package.

They are the following.

The master was very careful when he changed it for me, and he always answered my curiosity. The following is the whole process of replacement:

Remove the hub with anti-theft screws

The brake pads are exposed and the outside is really thin.

The outer piece on the left is thicker.

There is an alarm line on the right rear wheel.

The alarm line is renewed. It’s all in the online card.

Compared with the old and new films, the inside of the original film is still relatively thick.

The print on the new film is very clear

The new film is very thick, and the friction material is stepped.

Take down two old films

The comparison between the old and new films is obvious.

If you change a solid new film, you will be relieved to open it.

After loading, turn the wheel to see if it is astringent.

The last step, the driving computer reset, “rear brake pads remaining”restore to 90000km”

Change the brake pads, and it’s done.

When four brake pads were removed, it solved a lot of my doubts.

1. Why does the driving computer show that there are still 5000km brake pads that SSSS says have reached the limit?

Because the brake alarm line is on the inside of the right side, and both of my rear wheels are thick on the inside and thin on the outside, the outside has reached its limit when there is an 5000km inside.

2. Does it matter that the thickness of the outer brake pads on both sides is different, more on the left and less on the right?

It doesn’t matter if I use it personally, but when a piece is about to be changed, it’s best to replace it all together. According to the mileage of the thinnest piece, mine is 100000km.