The things with brakes, steering, driving position etc is that it's all relative. Usually most people who drive other cars with more preferential characteristics tend to pick up little nuances like this, others don't. It's not to say it's a complete horrible feature which debilitates the car but I personally would rather it not be there.
Brake pressure varies
- Thread starter samZ4M
- Start date
exdos said:
I'd expect though that on a wet day you'll be rather smoother with your inputs so you won't trigger such behaviour. I'd agree that most of the time you can drive around it, but it's highly annoying all the same that the computer thinks you want maximum pressure on the brakes just because you've lifted off the accelerator quickly, on a bogo bmw I can understand but an M really ought to leave the necessary applied brake pressure up to the driver not the computer. Having said that it rarely bothers me, but I detest it being there all the same. I do not need a computer to decide how hard I want to brake!!!
monaco_blue
Member
Interesting reading here:
http://www.bmw.com.my/com/en/newvehicles/mseries/z4mcoupe/2006/allfacts/engine_dsc_advanced.html
On another forum I read that brake drying is only active when the rain sensor is enabled. I'm guessing it's actually when the wipers are fully on as well.
http://www.bmw.com.my/com/en/newvehicles/mseries/z4mcoupe/2006/allfacts/engine_dsc_advanced.html
On another forum I read that brake drying is only active when the rain sensor is enabled. I'm guessing it's actually when the wipers are fully on as well.
monaco_blue
Member
Agreed but I would guess that brake drying will subtly affect pedal feel.
sure, but this issue is not something that is more or less noticeable in the wet.
It's this little bastard I'd like to get rid of
1. Ready Alert Brake (RAB): the brakes pads are pressed to the discs as soon as the driver releases the accelerator.
or maybe this? 3. Dynamic Brake Control (DBC): active support for drivers in extreme braking conditions.
Traction control off or on M-Track mode gets rid of the other nasty
2. Cornering Brake Control (CBC): for safe and controlled braking on bends
It's this little bastard I'd like to get rid of
1. Ready Alert Brake (RAB): the brakes pads are pressed to the discs as soon as the driver releases the accelerator.
or maybe this? 3. Dynamic Brake Control (DBC): active support for drivers in extreme braking conditions.
Traction control off or on M-Track mode gets rid of the other nasty
2. Cornering Brake Control (CBC): for safe and controlled braking on bends
monaco_blue
Member
Get coding!
TomK said:
Coming down the Wheatcroft straight I was at full throttle then instantly braking to turn right at Redgate and found I was braking later than most whilst heel/toeing but still never found the brakes performed differently or more sharply than expected. In the wet conditions I would've been caught out if it had occurred. I've also done around 100 laps of The Ring in the car, mostly in excellent dry conditions, where I was able to drive more aggressively and still not experienced this phenomenon. I regularly drive 5 different vehicles, so I'm familiar with adapting to different vehicle characteristics, so I would expect to have experienced the feature if it had occured in my Z4MC.
Fair enough, I certainly feel though there are occasional 'issues' from the brakes in their response and that's coming after a couple of porsches and an e46m3cs (same brakes as ours without the newer ecu and these new 'features'). It seems it's not just me that feels this as well.
I've always been a big critic of the OEM suspension, partly because of the excessive pitching on braking. I swapped to AC Schnitzer Racing suspension within a couple of months of getting my Z4MC, which virtually eliminates the pitching on braking, so perhaps that's the reason why I don't experience the problem?
I'd agree with you on the suspension, but I've felt this trait in many different circumstances not necessarily to do with the loading on the chassis. You can pretty much instigate it by lifting off the throttle aggressively at very low speeds and then try to be delicate on the brakes. I don't think this is due to pitching of the car. It's a weird one, as I say I don't find it an issue so much any more, perhaps I'm pre empting the car more than I used to, regardless I would just rather the computer didn't get involved at all.
Am I right in thinking there's a fuse that can be pulled for the abs system? To be honest I'd rather not have that on track as well, and if it gets rid of all these slightly archaic 'systems' then all the better as far as I'm concerned.
Am I right in thinking there's a fuse that can be pulled for the abs system? To be honest I'd rather not have that on track as well, and if it gets rid of all these slightly archaic 'systems' then all the better as far as I'm concerned.
My ///M does this too and it annoys the hell out of me! It's most noticeable when braking hard and heel and toeing down through the gears into a tight bend. It's less of a problem on the road, but modulating the brake force can be difficult even on the road if the throttle is closed briskly.
I'm with you Tom, I'd rather not have any of these features and would prefer no ABS on the track.
Of note, I hated this feature with OEM suspension and Eibachs, and it persists with Clubsports. Interestingly, the DSC is far less effective (but still intrusive) since fitting Clubsports, I suspect due to the near elimination of pitch and roll.
I'm with you Tom, I'd rather not have any of these features and would prefer no ABS on the track.
Of note, I hated this feature with OEM suspension and Eibachs, and it persists with Clubsports. Interestingly, the DSC is far less effective (but still intrusive) since fitting Clubsports, I suspect due to the near elimination of pitch and roll.