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Read the WELCOME ALL BMWFANATICS post.
Bed In Procedure for brakes
- Thread starter iyerm2
- Start date
Philip Foglar
///Member
What I did when I replaced all disks and pads on the E46 was to start off by driving gently so that the disks and pads have chance to wear in a bit - literally for a few kilometres of normal driving, and without allowing the car to stand still while on the brakes. Then find a quiet stretch of road or even a hill for that matter - belt thera car up to about 100 km/h and then brake fairly firm and hard until the car slows to about 20 km/h. Then without stopping (turn around if necessary) accelerate again up to 100 km/h and repeat this until you can smell hot brakes - really pungent but necessary! The general rule of thumb is roughly 10 good hard brake sessions in close succession without stopping and then most important is to continue driving gently so that the brakes can cool off properly - last thing you want is to allow the disks to get heat soak or get any material transfer from the hot pads!
And for general caring of brakes after bedding in, avoid sitting on the brakes at robots especially if the brakes have had to work - for instance stopping after coming off a freeway. Use the handbrake rather! :idea:
And for general caring of brakes after bedding in, avoid sitting on the brakes at robots especially if the brakes have had to work - for instance stopping after coming off a freeway. Use the handbrake rather! :idea:
Fordkoppie
///Member
frikkieh said:
I have always taken Frikkie’s approach as to be really gentle on the brakes for the first 200km of town driving and thereafter just normal driving, and have had no troubles afterwards. Used and abused those same brakes like a hooligan afterwards and they are still perfect. No scoring and neither vibrations nor blue/purple hot spots.
I am not saying that this is the best way, but it works for me
BTW - i would get the OEM pads if it is for nomal road use. I have had Ferodo platinum pads destroy a set of e34 M5 discs in no time previously
Philip Foglar
///Member
Fordkoppie said:
Same here! But tried the more aggressive bedding in process and seems to have worked perfectly too! I think the main thing is to prevent heat soak in general and material transfer from hot brake pads... :idea:
Could be wrong, but so far so good!!
Fordkoppie
///Member
Philip Foglar said:
+1
vylint
New member
How would this advice be applied to those of us driving automatics? I've been advised on another thread to NOT put the car into N while stopping at a traffic light, since the auto gearboxes aren't really designed to be switched often between N and D. Surely I shouldn't be in D with the handbrake up.
:=):
Philip Foglar
///Member
vylint said:
This is of course going to be a bit tricky. I would say under normal daily driving conditions sitting on the brakes and slowly letting the car creep a bit forward is the best bet! I actually often do this with my car if a bit lazy to use the handbrake, or if the road is level, foot off the brake pedal with my foot covering if needed of course.
Then again, am sure you can use the handbrake with the car in D with an auto - on a downhill this might be impossible though, but worth a try. Worth a try...
Fordkoppie
///Member
frikkieh said:
Some
My dad gets a new pre launched car almost every 2 weeks with 0km on it, and some of them came already bedded in and some not. Those that were not are really terrible. However, all of them got better as they approached 500km
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