The truth of the matter is that under BSRI, the brake pads and brake rotor (and as with all other wear and tear items such as spark plugs, wiper blades, Microfilter, etc.) are under what is termed as "on-condition". These items are inspected at every visit and are replaced if found to be below the limit. This is irrespective of the iDrive or other indicators. There is NO service interval for pure on-condition items. There is no service interval for brake pads and rotor. In the case of the brakes, if an inspection shows that the brake pads friction marterial is 3mm or less, or the brake rotor is below a certain thickness or is damaged by excessive scoring or is warped, the SC will replace them without question under BSRI.
Many F30 have had the brake pad and rotor change even though the iDrive says that they have a lot more KM to go, when the pads and/or rotor were found to be below the limit.
Many F30 have reported that the brake pads are found to be badly worn during inspection despite their iDrive showimg high remaining KM. Whilst many owners also reported a sudden and abrupt brake replacement alert after the iDrive brake wear indicator showing no reduction in brake wear indicator for a long period of time. The over reading or abrupt brake wear indication in the iDrive have been found to be due to faulty brake wear sensors or because the worn brakes are on the wheels where there is no sensor. The brake wear sensors are installed only on the LH front and RH rear brake assemblies.
At each SC visit, the brakes are inspected visually and if found to be below the limit, the SC will change it. This is a standard inspection. The SC will share the inspection report with the owner when collecting the car after each SC visit.
Should an owner conduct their own visual inspection and find that the brake pads are below the limit, the SC wil inspect the brake pads and change them if found to be below the limit.
The SC will not change the pad or rotor if they are found to be still within the limit. I am unaware that there is a way of over riding the iDrive brake wear indicator.
I have heard that some SC out of goodwill, will submit a request to BMW to replace the brake pads/rotor for Customers whose brakes are near the limit and the BSRI are about to expire.
I recommend owners to regularly conduct a visual inspection of their brakes. An indication of badly worn brakes is when you hear metal to metal sound when depressing the brakes.
harry_7 said:
According to Ingress, BSRI reading for brake in the I-drive can be override manually, I heard they will measure your brake pad, if it's 4mm or thinner, they will change for you. So far, my car clocking at 54k mileage but the i-drive brake still display 15,000km, weird isn't it? Cos new car bought, it started with 50k, now already exceeded 50k, still remain 15k to go... :stupid: :stupid: :stupid: