[Gavlar2019]

I placed my order for an M240 in January, like others it was due this month, now put back to September because of ID8…

Whilst I’ve been waiting I’ve seen a few people comment on the brakes (like Joe Achillies) not being great, I’m now starting to wish I’d optioned the M Technology Pack for the enhanced brakes capacity especially as it’s only £300, I just thought as I wouldn’t be taking it on a track it wasn’t necessary, but reading it I’m not sure if the brakes are better or just last longer on a sprint “increased heat capacity of the braking” . Has anyone tried both of know if they are better?

[MPR]

I will not be tracking my car either, but I added the ZTK/technology package for both the wheels and brakes. I kind of wish I could get all seasons, but I'll burn through the summers then swap on AS's.

The specifics on the brakes have been a grey area. I've asked many to provide measurements of both standard and larger calipers that come with the ZTK/tech package. It's odd that BMW wouldn't point out the larger calipers as a selling point. Based on pictures, the calipers do look larger, and it makes sense they'd be larger with larger rotors.

I've read mixes feedback on brake performance. Some say its awesome, while others say they are terrible.

[allfitat55]

We don't get the ZTTK or brake option pack here in Aus and I just did my 1st spirited backroad drive with the local BMW club. We're talking plenty of corners and downhill and up and some decent straights to corners.

I managed to keep a couple of M2s and M3 honest and I was pretty happy with the standard brake package while maybe a softer pad upgrade in the future on the fronts I really cant say after 40 mins of driving on back roads I never lost any confidence nor had brake fad during those.

[EXE46]

OP, you'll be fine, just swap out the stock pads for more aggressive ones. I have these brakes on my M340i and they're fine. Also, G20 owners dont have these same complaints that some have with the G42. Some folks have swapped the oem pads for Hawks and reported major improvements. I swapped mine out after they required replacing with more aggressive pads from Powerstop and again no complaints. Hover over to the G20 forum and check the sub section that cover brakes for further details.

With that said, for 300 quid, I would add the option since that's a no brainer.

[Gavlar2019]

Thanks for your feedback both . I think the reality is I won’t have a problem with the standard brakes noting I’m not going to be going on a track

[danallxt]

Based on pictures, the calipers do look larger, and it makes sense they'd be larger with larger rotors.

Calipers are the same size.
BMW doesn't mention larger calipers cause they are not.

[MPR]

Originally Posted by danallxt

Calipers are the same size.
BMW doesn't mention larger calipers cause they are not.

Have you seen this documented anywhere, or is this your assumption? It's been debated in a few threads, and based on images, the rotors and calipers appear larger with the ZTK/technology package.

https://g42.bimmerpost.com/forums/sh....php?t=1899541

I posted ZTK vs non-ZTK here, an ZTK look much larger:
https://g42.bimmerpost.com/forums/sh...5&postcount=15

[jpcoop]

The caliper body may be a different size - in fact it has to be to conform to the different geometry of the larger rotor - but that is completely meaningless.

What matters is the *swept area* of the caliper aka the size of the brake pad, and I have seen no evidence that there is any difference between the two.

[eddj]

Originally Posted by Gavlar2019

I placed my order for an M240 in January, like others it was due this month, not put back to September ID8…

Whilst I’ve been waiting I’ve seen a few people comment on the brakes (like Joe Achillies) not being great, I’m now starting to wish I’d optioned the M Technology Pack for the enhanced brakes capacity especially as it’s only £300, I just thought as I wouldn’t be taking it on a track it wasn’t necessary, but reading it I’m not sure if the brakes are better or just last longer on a sprint “increased heat capacity of the braking” . Has anyone tried both of know if they are better?

if you watch Achillies last video where is comparing a RS3 with a M240i with the M Technology pack for the brakes and oil cooler you will see that he mentions he is still a little bit annoyed with the brakes performance, so buying that extra package in my opinion it would make no difference from the M Sport brakes which come equipped as standard . That package is maybe useful only on track but if you dont take it to a track I would say the best move is to save that money for you or to add some extra other options you maybe dont have already like ACC or the 360 degree camera parking system which in a place like Europe/UK with tighter parking spots and more crowded than in North America would make a very useful addition.

[eddj]

Edit: here is the link to the latest video of Achillies' ; he is talking about the braking system at around minute 14:40 and on the video you can see that the m240i has the wheel arch extensions in body colour meaning it has the M Technology Pack which includes larger 374mm front brake rotors (+26mm) and the engine oil cooler for increased heat capacity for braking system and drivetrain equipped.

[danallxt]

Have you seen this documented anywhere, or is this your assumption? It's been debated in a few threads, and based on images, the rotors and calipers appear larger with the ZTK/technology package.

Unfortunately 6-8 months after this car has been released we are still guessing/debating this, and i put it on BMW and their lack of information which is frustrating.

But i make the contention (loosely) based on the photos with measurements shown that you (MPR) and Jbazz have posted under the M240 tech topic of brakes/suspension and the thread "larger brakes option". Those photos of ZTK and Non Ztk calipers appear to show the same size, at least the same length of caliper for each. Mine also measure the same (non ZTK). (at least i am assuming they are the same, problem is the one photo of ZTK caliper is a bit off focus and is at an angle but it appears to be same as non ZTK)

I will agree that in the photos posted here (above) in this thread of blue and red calipers they look perhaps different but no way you can depend upon that as they are taken with likely different camera lens, they are at different distances and different angles, plus the wheels obscure a lot. As a result visual comparison from those is unreliable.

What gets confusing is when folks are talking about the 230 series as those are smaller and the performance brake calipers for those are larger in comparison to the stock/standard 230.

[allfitat55]

Originally Posted by eddj

Edit: here is the link to the latest video of Achillies' ; he is talking about the braking system at around minute 14:40 and on the video you can see that the m240i has the wheel arch extensions in body colour meaning it has the M Technology Pack which includes larger 374mm front brake rotors (+26mm) and the engine oil cooler for increased heat capacity for braking system and drivetrain equipped.

He does not mention the bigger disks with the Pro Pack. In Aus we get the same wheel and guard extenders and the smaller brakes as in this video.

[Fernando_380]

Originally Posted by eddj

Edit: here is the link to the latest video of Achillies' ; he is talking about the braking system at around minute 14:40 and on the video you can see that the m240i has the wheel arch extensions in body colour meaning it has the M Technology Pack which includes larger 374mm front brake rotors (+26mm) and the engine oil cooler for increased heat capacity for braking system and drivetrain equipped.

Yeah in the UK/EU here the arch extensions are required because of how far the upgraded wheels stick out. They do not come as part of the M-Tech cooling pack we have.

[Winrya]

As above the cooling and brakes are a separate pack for £300 in the uk. The car joe has does have the pro pack with the ps4 tyres but no one knows whether it has the m performance pack too. He also always mentions adaptive suspension being standard but that is also a £500 option here

[Gavlar2019]

I should have asked my dealer Tony, here he is discussing it with Joe. 21 mins 30 seconds he talks about it & 22 mins 30 seconds he goes into what it has…. It DOESN’T add larger discs or callipers !

[Winrya]

Originally Posted by Gavlar2019

I should have asked my dealer Tony, here he is discussing it with Joe. 21 mins 30 seconds he talks about it & 22 mins 30 seconds he goes into what it has…. It DOESN’T add larger discs or callipers !

That was what was initially thought but some cars have big discs and calipers and some don’t so it appears as with the 3 series this pack includes the bigger brakes. BMW just didn’t make it terribly clear

Some discussion and pics here

https://g42.bimmerpost.com/forums/sh....php?t=1899541

[Gavlar2019]

Oh ok, no BMW really so like to make it as clear as mud!

Thanks