05-17-2024, 02:22 PM | #1 |
New Member
0
Rep 17
Posts |
Brake pad reading
2019 430ix
Mycar information display is saying that I need new front brake pads in 1200 miles. Is that usually accurate? how does the system measure that? What’s a typical mileage for brake pads? Also, any suggestions every time I bring it in for pads they suggest new rotors. |
05-17-2024, 03:18 PM | #2 |
Captain
1411
Rep 958
Posts |
It’s when the recommendation says to check them. It’s using mileage or time, whichever is less, not a brake measurement (if your wear sensors haven’t worn enough to trip).
There can be a wide range of mileage based upon how the brakes are used, including self-application from the dynamics controls. Overall exterior exposure, cleaning and condition of pads/rotors are also factors. BMW’s estimate is usually a bit conservative, obviously. You can change just pads if the rotors aren’t worn. AFAIK, BMW dealers prefer to replace rotors vs. resurface them. The minimum thickness might be too easy to exceed with a full cut/resurface. IIRC, the minimum pad thickness warning occurs at 3.7mm and the Min is 3mm, and the rotor can only wear 2.4mm (1.6mm for M). The rotor min thickness is also cast into the rotor. Check them yourself to see if your estimate’s any good… . Last edited by visionaut; 05-17-2024 at 06:24 PM.. Reason: Pic & min pad |
Appreciate
0
|
05-17-2024, 10:44 PM | #3 |
Lieutenant General
8630
Rep 16,679
Posts |
It doesn't. It's a semi-educated guess. The wear sensors aren't worth much either, as there's only two of them and there's eight pads. The only way to know the condition of the pads is to visually inspect all of them on a regular basis.
|
Appreciate
0
|
Post Reply |
Bookmarks |
Tags |
brake pad sensor, brakes brake job local |
|
|