[Loopcifur]

Hi All,

Just wanted to double check before I order some Discs and pads before I go Cadwell later this month.

I’ve searched the forums about msport brakes and it’s a minefield of information.

Thought I’d found the answer that if I have a 2016, 430i with the blue msport brakes...they will be 340mm.

But before ordering I checked the stamp on the callipers and it’s says 370/380mm.

So to confirm I’d need to order the 370mm discs and matching pads?

Thanks in advance!

Ps also any tips on track pads and discs? Was heading Pagid way but open to other suggestions!

[smorg99]

Front discs are usually 370mm if you have the blue M Sport brakes.

[3-GT]

Real OEM are showing

340 x 30mm front
https://www.realoem.com/bmw/enUS/sho...diagId=34_2312

345x24 rear
https://www.realoem.com/bmw/enUS/sho...diagId=34_2313

Rear discs bigger than front?

M performance discs are showing as 370.
https://www.realoem.com/bmw/enUS/sho...diagId=03_0104

Edit:

It looks as though it depends on many factors like engine option and even which market it sold in. Guess that's where the confusion is.

[Techno 9000]

Blue calipers means you have the 'M-Sport' brakes, also seen as S2NH if you decode your VIN here. These are the upgrade on the standard Grey calipers that come with smaller discs.

M-Sport are 370mm discs at the front.

Brembo show this, I used it to hunt down my preference of pad for my 2015 M-Sport equipped model.

Pads P 06 096

Pads technical data
WVA 25028
Width 114,8 mm
Thickness 17,9 mm
Height 91,2 mm
Braking system Brembo
Wear indicator Prepared

Compatible OE codes
BMW 34112284765
BMW 34112284969
BMW 34116857968
BMW 34116859282
BMW 34116865460
BMW 34116876641
BMW 34116878882

[teaston]

28i's and above have 370mm front discs.

For track use go with Ferodo DS2500 pads and plain 2 piece discs.

[Loopcifur]

Amazing thanks all!!

Have to say when I went oulton park on the standard pads they were decent and didn’t fade too much only after a good stint!

However they squeak like something else now and sounds like a bus!

Ds2500s on the list!

Anywhere recommended to get them from at a decent price?

[teaston]

Originally Posted by Loopcifur

Amazing thanks all!!

Have to say when I went oulton park on the standard pads they were decent and didn’t fade too much only after a good stint!

However they squeak like something else now and sounds like a bus!

Ds2500s on the list!

Anywhere recommended to get them from at a decent price?

Don’t think you’ll beat this price:

https://www.ebay.co.uk/itm/392867334107

[johnung]

Originally Posted by Loopcifur

Hi All,

Just wanted to double check before I order some Discs and pads before I go Cadwell later this month.

I’ve searched the forums about msport brakes and it’s a minefield of information.

Thought I’d found the answer that if I have a 2016, 430i with the blue msport brakes...they will be 340mm.

But before ordering I checked the stamp on the callipers and it’s says 370/380mm.

So to confirm I’d need to order the 370mm discs and matching pads?

Thanks in advance!

Ps also any tips on track pads and discs? Was heading Pagid way but open to other suggestions!

You were smart to check the raised lettering on the back of the caliper casting for the rotor size. The "370/380" definitely means that you have 370mm discs. "340" would mean 340mm disc. See photo.

(Same calipers are used on M3/M4 with 380 discs because their mounting points are 5mm more away from center. F3x model cars can only use 370mm discs.)

The 370 and 340 calipers are identical except the casting is stretched out 15mm more from center. See photo. So they also take identical front brake pads. It's the same part number which often causes confusion.

I've heard good things about Ferodo pads in general. Good luck!

[teaston]

Originally Posted by johnung

You were smart to check the raised lettering on the back of the caliper casting for the rotor size. The "370/380" definitely means that you have 370mm discs. "340" would mean 340mm disc. See photo.

(Same calipers are used on M3/M4 with 380 discs because their mounting points are 5mm more away from center. F3x model cars can only use 370mm discs.)

The 370 and 340 calipers are identical except the casting is stretched out 15mm more from center. See photo. So they also take identical front brake pads. It's the same part number which often causes confusion.

I've heard good things about Ferodo pads in general. Good luck!

I think you mean 10mm and 30mm, not 5 and 15

[E60525d]

Originally Posted by teaston

I think you mean 10mm and 30mm, not 5 and 15

5 and 15 is correct. Mounting the caliper 15mm outwards allows an increase of 30mm in disc diameter.

[teaston]

Originally Posted by E60525d

5 and 15 is correct. Mounting the caliper 15mm outwards allows an increase of 30mm in disc diameter.

Oh of course, each side of the disc!

[Loopcifur]

Thanks for the input very reassuring!

So M4 pads will also fit, just not the 380 discs?

Interesting!

[teaston]

Originally Posted by Loopcifur

Thanks for the input very reassuring!

So M4 pads will also fit, just not the 380 discs?

Interesting!

Yes, definitely identical calipers to the M3/4

[johnung]

Originally Posted by teaston

I think you mean 10mm and 30mm, not 5 and 15

Nope, I wasn't mistaken. A mounting point 5mm further from center adds 5mm to the radius but a full 10mm to the diameter of the rotor used on the M3/M4.

Same goes for the 15mm longer caliper casting adding 30mm to the diameter of the rotor it uses. 340mm —> 370mm

[johnung]

Originally Posted by Loopcifur

Thanks for the input very reassuring!

So M4 pads will also fit, just not the 380 discs?

Interesting!

You are correct!

IMO avoid BMW pads no matter what car they came with originally. None of them have more than average bite. Some guys assume that they are getting a better pad because it came on an M3 or with the M Performance Brake Kit. Not really. Better pad options from aftermarket.

IMO For street performance, Hawk 5.0 pads are the best. If I was tracking, I would call Dave Zeckhausen at Zeckhausen Racing. He really knows pads and he ships internationally. (He ships the Hawk 5.0's too)

https://www.zeckhausen.com/

[teaston]

Originally Posted by johnung

Nope, I wasn't mistaken. A mounting point 5mm further from center adds 5mm to the radius but a full 10mm to the diameter of the rotor used on the M3/M4.

Same goes for the 15mm longer caliper casting adding 30mm to the diameter of the rotor it uses. 340mm —> 370mm

Yes I'd already worked that out, see my post above.

[Loopcifur]

Originally Posted by johnung

You are correct!

IMO avoid BMW pads no matter what car they came with originally. None of them have more than average bite. Some guys assume that they are getting a better pad because it came on an M3 or with the M Performance Brake Kit. Not really. Better pad options from aftermarket.

IMO For street performance, Hawk 5.0 pads are the best. If I was tracking, I would call Dave Zeckhausen at Zeckhausen Racing. He really knows pads and he ships internationally. (He ships the Hawk 5.0's too)

https://www.zeckhausen.com/

Thanks for the information really helpful and to everyone else too!

Ordered DS2500 front and back which should be here within the week so a good week to fit and bed them in before the track session!

[teaston]

Originally Posted by Loopcifur

Thanks for the information really helpful and to everyone else too!

Ordered DS2500 front and back which should be here within the week so a good week to fit and bed them in before the track session!

Let us know how you get on, they are meant to be incredible pads. Obviously no competition for a BBK, but at around 10x less expensive they should be great bang for buck.

[Loopcifur]

Will do!

The pads turned up today! Amazing service from the bay!

Will fit later this week with pics!

[G50]

Originally Posted by Loopcifur

Thanks for the information really helpful and to everyone else too!

Ordered DS2500 front and back which should be here within the week so a good week to fit and bed them in before the track session!

Bit of advice on a more track oriented pad... Yes they need initial bedding in on the road, especially if using existing discs, but they also need bedding in on the track.

They need a medium-high heat cycle put through them before they will be at their best.
Start your first session of the day being fairly light on the brakes for the first lap, 50-70% braking power for the next lap, 80% braking power for the next lap or two depending on how hot the brakes feel (if you get fade then one lap will do), then come in and let them cool, remembering not to put the handbrake on.

Your next session you will have much better brake performance and you can use them to their full potential.

Let us know how they do!

[johnung]

Originally Posted by teaston

Yes I'd already worked that out, see my post above.

Sorry, didn't see it because it wasn't a reply to me. Be safe!

[Loopcifur]

Pads are in!

Took 90mins with a few stops because it was roasting on Friday. Very easy swaps though on all 4 corners.

Bedded them in good and proper over the weekend and I’m very happy with them! But probably more because my standards were a lot more worn than I thought.

So following Cadwell I’ll do a proper review!