5ilver-5urfer

Hey - wanted to compare notes with this group. At what kilometers / miles, did you have to replace your rear brake-pads and rotors?
Doing my first replacement of both rear pads and rotors at 46K km / 29K miles...seems kinda of premature for me for the car to be asking for rear rotors this soon....

chynatown

jonathan358

Is this covered under warranty? I think I will need them changed in 1 year from when I got my car (approx 32,500 km). IIRC, some forum members complained of the fast brake wear/brake dust/brake noise and had them replaced for free.

5ilver-5urfer

I think the factory warranty for Canadian sold C43's (not sure how the US differs) covers premature brake-pad wear if they need to be replaced before either 2 years or 40K km....whichever comes sooner. Not sure if this warranty extends to covering premature wear on rotors though.

jerhu

Had my rear pads warrantied last week. Car has about 21k KM. Rotors are fine.

Spaggettio

30000kms here heaps of meat left.

MatthewJ

This has been discussed a few times. Seems cars equipped with the distronic lane keep and adaptive cruise tend to wear out rear brakes very quickly. The car uses the rear brakes to control the cars follow distance during cruise resulting in much faster replacement intervals.
My C400 does not have this feature and i have 24k miles (38k km) on it with original brakes.

RichardCranium3

This is the money answer. I'm at 24k miles and original pads all around. When I changed oil 4k ago, I inspected front and rear pads and still had +/- 50% life remaining. No Distronic for me.

jerhu

Although I agree that Distronic will most likely use more pads. With that said however my car doesn't have Distronic and my rears only lasted 21k. Mind you I don't really care as it was under warranty and the car is going back in Dec.

MatthewJ

I believe even the non-adaptive equipped cars use the engine braking and rear brakes to slow the car on downhill assents when cruise is on. IE set it to 50mph and try coasting downhill the car will engine brake and apply rear brakes to keep the car at exactly 50mph.
I actually find this quite annoying when i pass someone, forget i have cruise set to 75 and the car aggressively brakes to get back down to 75 after getting around a car.
I have to just keep on the throttle lightly or turn off and re-enable cruise after the car has gradually decreased its speed. Seems inefficient but i guess its supposed to prevent tickets
I could see where this driving style could wear out brakes quickly.

NYCSoiL

I replaced my rear pads at 15k miles. Paid $90.

jonathan358

This is why I never use CC. I feel it is such a waste of gas when any change to input makes it auto correct. When "manually" driving, the driver can apply gas at the most efficient moments such as uphill, downhill, corners that have sufficient grip...
I just really hate that it brakes just to get back down to the set cruise speed.

Star4life

17k miles and 2 track days and my rears are ready. fronts have life left.

l3m

I have 33K miles, went to the dealer for service the other day. Front pads are 9mm and rears are 6mm.

st33zy

is it normal to hear the brake wear indicators before the service message on the dash? here's my brake specs on a 2018 C43 with 25,000 km

Front: 8mm pads, 35.3mm rotors
Rear: 7mm pads, 23.4 rotors

thanks in advance

Big Goober

40k miles for the rears- pads and rotors. I was told that the rear pads weren't smooth and, as mentioned above, a lot is due to the torque vectoring that the car does on its own for our driving.

The fronts probably have another year left on them.

I did pretty good on the mileage though.

Big Goober

Yes. I didn't even have the brake wear indicator light come on but had heard the sensor while backing up usually.

st33zy

gotcha, just wanted to see if i had to wait for the CPU to catch up or just go with the audible noise indicator! Thanks!