[juld0zer]

ISTA/D has the guide on what to do. Service Functions > Chassis > Traction Control. Open up the FUB and it will tell you what you need to do, in what order.

I've already left work for the day sorry

[kiteboy]

hi,

i've put caliper m4 serie F on my e92 335i , with brembo disc 370mm.

all is plug & play for front...

my question it is necessary to code it ? with SPBR etc....?

else brake master cylinder for e92 335i is reference --> 34336785664

maybe it will be better to put brake master cylinder e92 m3 with reference --> 34312283533


one picture

[LMB335IS]

Originally Posted by kiteboy

hi,

i've put caliper m4 serie F on my e92 335i , with brembo disc 370mm.

all is plug & play for front...

my question it is necessary to code it ? with SPBR etc....?

else brake master cylinder for e92 335i is reference --> 34336785664

maybe it will be better to put brake master cylinder e92 m3 with reference --> 34312283533


one picture

No coding needed and your stock master cylinder is fine with just the fronts done.

[david in germany]

Originally Posted by LMB335IS

No coding needed and your stock master cylinder is fine with just the fronts done.

some people do need coding but no one knows why. Some need it and some don't.

[kiteboy]

Originally Posted by LMB335IS

No coding needed and your stock master cylinder is fine with just the fronts done.

How are you sure of that?

People who put aftersales bm performance brake (6 pistons brembo) need code SPBR no ??

Rgds

[kiteboy]

Originally Posted by david in germany

some people do need coding but no one knows why. Some need it and some don't.

How to know if coding is necessary ???

[LMB335IS]

Originally Posted by david in germany

some people do need coding but no one knows why. Some need it and some don't.

Sport brakes were never a 335i option so while you may be able to change the VO I dont think it will change the bias, etc. like it does on a 328i where a difference was made. I've never compared the 328 and 335 DSC software. I'd have to see a 328 and 335 DSC TRC file pre and post SPBR VO addition and compare them to be convinced that it makes a difference in the 335. I ran the 370mm up front for a few months before I added the rears and the M3 MC and it was fine.

[LMB335IS]

Originally Posted by kiteboy

How are you sure of that?

People who put aftersales bm performance brake (6 pistons brembo) need code SPBR no ??

Rgds

+SPBR was never a VO option for 335i's. So while you may be able to add the option to your VO, your DSC software may not recognize it or it may not make any changes. One way to know for sure it to save the TRC file of your car. change the VO, default code the appropriate modules, save the new TRC file and compare them.

[kiteboy]

Peope in UK where i bought m4 caliper said.



I would recommend having the system bleed properly via abs pump. I had the same issue on my e91 last year when I fitted these, I was going crazy and was also looking for m3 master cyl, because after I bled it 3 times the pedal was still sinking.
I then did some research and decided to give it another go and bleed it again via abs pump and problem solved.

[david in germany]

Originally Posted by kiteboy

How to know if coding is necessary ???

Sorry, I didn't catch the 335i part. On a 335i I don't think coding is needed or would do anything. On a 328i you would feel a loss of stability when braking. My wife's car shifted side to side almost like jerking the steering wheel back and fort on a straight road when braking hard.

[streetpro]

Originally Posted by sono0312

yes, i love to support if a certain # of people are eager to do so...

Other solution is to have the e-brake shoes re-layed with thicker braking compound/layer...
I had run into this very same issue when going from e36 328i rear brakes to e36 M3 brakes... it has worked perfectly.

[breakingpoint]

Let me revive this thread; on German aftersales sites Leebmann24 and AfterSales, they do not offer the performance brakes for 330i and 335i.

Is this because the coding is non-existent?
Maybe because the brakes are already calculated for this bias, and DSC as well?
So to speak, the existing cylinder surface is big enough to cover for "upgraded" 6-piston front and 4-piston rear calipers?

[david in germany]

Originally Posted by breakingpoint

Let me revive this thread; on German aftersales sites Leebmann24 and AfterSales, they do not offer the performance brakes for 330i and 335i.

Is this because the coding is non-existent?
Maybe because the brakes are already calculated for this bias, and DSC as well?
So to speak, the existing cylinder surface is big enough to cover for "upgraded" 6-piston front and 4-piston rear calipers?

They do not offer the 6 piston performance brakes for the330i and 335i because the brakes are actually smaller than the stock brakes of the two cars. BMW actually tested the performance brakes on the two cars and found it to be an actual downgrade for them. Less rotor = less contact area= less friction= less stopping power. Less surface area also means Less Heat dissipation. Doesn’t matter if you have more clamping power if the rotors and pads melt down from the over heating.

[bluewater328]

Originally Posted by breakingpoint

Let me revive this thread; on German aftersales sites Leebmann24 and AfterSales, they do not offer the performance brakes for 330i and 335i.

Is this because the coding is non-existent?
Maybe because the brakes are already calculated for this bias, and DSC as well?
So to speak, the existing cylinder surface is big enough to cover for "upgraded" 6-piston front and 4-piston rear calipers?

From a 335i, going to the 6 cylinder that's on the 1-series is a downgrade. IIRC, the 340mm Brembos arent much of an upgrade either. Only the 370mm has moderate potential increase in stopping power, and most of that is really just how much brake fade it prevents (same pistons) just on a wider disc.

Rears are a little different story, but because of the bias, the difference may not be significant unless you are doing the M3/M4 upgrade or the 380/370 upgrade.

On the other hand, the brakes (esp on a pre-lci) for the 328i have a significant jump in pistons on both ends and disc size. So you could see where it could potentially benefit from coding.

[breakingpoint]

Originally Posted by david in germany

They do not offer the 6 piston performance brakes for the330i and 335i because the brakes are actually smaller than the stock brakes of the two cars. BMW actually tested the performance brakes on the two cars and found it to be an actual downgrade for them. Less rotor = less contact area= less friction= less stopping power. Less surface area also means Less Heat dissipation. Doesn’t matter if you have more clamping power if the rotors and pads melt down from the over heating.

Strange, as you stated your wife's car was braking better than your 335i. Must be the weight difference then?

[david in germany]

Originally Posted by breakingpoint

Strange, as you stated your wife's car was braking better than your 335i. Must be the weight difference then?

that is what I believe. 335i brakes on a 328i is a winning combo.

[Andystobbs]

Sorry to revive a thread, I'm after opinions from anyone who has put 335i brakes on 320

I have done the rears already and have the fronts to fit next week, so far the brake pedal feels less responsive, although its brand new discs and pads with no more than 10 miles so far. To be honest its nearly two months since I last drove the car and I've driven others in between so I really can't say I'm doing a fair comparison.
I've gone to 336 on the back from 300 and the front will be 348 from 312 (I think).

That is to say, opinions on whether to code SPBR.

I already read the trace from DSC and there is not a nice obvious option for sport brakes/not sport brakes. I plan to decode a 335i vin to be certain SPBR is enabled from factory for the standard brakes.

[david in germany]

Originally Posted by Andystobbs

Sorry to revive a thread, I'm after opinions from anyone who has put 335i brakes on 320

I have done the rears already and have the fronts to fit next week, so far the brake pedal feels less responsive, although its brand new discs and pads with no more than 10 miles so far. To be honest its nearly two months since I last drove the car and I've driven others in between so I really can't say I'm doing a fair comparison.
I've gone to 336 on the back from 300 and the front will be 348 from 312 (I think).

That is to say, opinions on whether to code SPBR.

I already read the trace from DSC and there is not a nice obvious option for sport brakes/not sport brakes. I plan to decode a 335i vin to be certain SPBR is enabled from factory for the standard brakes.

Yes, coding will make a difference in pedal feel but, do not code the car until you install the front brakes. Also, if you ever do it again, do the front brakes first or do not drive the car. Stronger rear brakes can cause you to loose control in an emergency situation. Spbr is not coded on the factory 335i as they are designed and coded for the larger brakes as standard.

[Andystobbs]

Originally Posted by david in germany

Yes, coding will make a difference in pedal feel but, do not code the car until you install the front brakes. Also, if you ever do it again, do the front brakes first or do not drive the car. Stronger rear brakes can cause you to loose control in an emergency situation. Spbr is not coded on the factory 335i as they are designed and coded for the larger brakes as standard.

Noted, thanks for the advice.
I had to test the rears before the fronts really as I had to make and install spacer rings for my smaller handbrake shoes. I was concerned the heat from brazing may have warped the discs. I didn't want to over complicate the results by having 2 new sets of brakes at once (the larger front discs are used and as such an unknown quantity in terms of quality).

Question, how does the pedal feel alter by coding in normal driving situations. Does my MK60 DSC incorporate a precharge circuit?

[david in germany]

Originally Posted by Andystobbs

Question, how does the pedal feel alter by coding in normal driving situations.

Firm but not too hard

Originally Posted by Andystobbs

Does my MK60 DSC incorporate a precharge circuit?

That I do not know.

[Andystobbs]

Sorry you missunderstood me, I meant to ask how can coding change pedal feel when as I understand it the feel is a function of master cylinder and servo assistance, at least until the ABS is required to function as in a lock up situation.

Though your second statement essentially negates my question.

Thanks

[Andystobbs]

I think I'll make an ssd file for coding the dsc only with spbr. Make it faster to switch between spbr and non spbr.