[BimmeRahG42]

Is the ZTK option only available for the newer models or was it available for the 2022 and 2023? Who has it and how do you like it? Is it a needed addon or nice to have for those that like to push the limit a lot?
I am simply just curious.

[MPR]

Originally Posted by BimmeRahG42

Is the ZTK option only available for the newer models or was it available for the 2022 and 2023? Who has it and how do you like it? Is it a needed addon or nice to have for those that like to push the limit a lot?
I am simply just curious.

It was an option for 2022. It was not clear to many what was included with the package, specifically the larger rotors and calipers. I placed my order without the package.

I initially wanted the package just for the wheels but figured it wasnt worth the cost, but then I learned that the larger calipers and rotors were also included, so I had the package added immediately.

The oil cooler under the front bumper is a risk, but you can get the Turner skidplate to protect it.

[Ricochet48]

It's been available in the US since the G42's launch in 2022.

Well worth it if you plan to track even a little bit. Hoping they add some factory protection for the cooler under the front bumper though (rather than forcing everyone to get the Turner plate for $450)

[Nate48]

I have it on my 2023.

[MPR]

Even if you don’t track I still think its worth it at $2K. Unique wheels, large brakes, and fender garnishes, which i hated at first but have grown on me, and others as well. I could live without the oil cooler, but mine is protected by a TMS skid plate.

[Pentland]

As above worth it for the wheels alone. EU models don’t have the cooler in the same place so it’s not a risk for us.

[Baldilocks73]

Originally Posted by Pentland

As above worth it for the wheels alone. EU models don’t have the cooler in the same place so it’s not a risk for us.

Where is the cooler on the EU models and why would it be different?

[Pentland]

Originally Posted by Baldilocks73

Where is the cooler on the EU models and why would it be different?

It’s upright behind the front triangular air vents.

Why would it be different - we have no beef with the Mexicans

[Coconut]

I special ordered my car with it just because I like the look of the bigger brakes. A few youtube reviews stated the stock brakes as being a weak point so I guess the bigger ZTK front brakes would be a welcome upgrade.

[eli371]

Originally Posted by Pentland

It’s upright behind the front triangular air vents.

Why would it be different - we have no beef with the Mexicans

mine has that one too along with the one underneath

[Baldilocks73]

Originally Posted by Coconut

I special ordered my car with it just because I like the look of the bigger brakes. A few youtube reviews stated the stock brakes as being a weak point so I guess the bigger ZTK front brakes would be a welcome upgrade.

Originally Posted by eli371

mine has that one too along with the one underneath

Yes, the North American spec has 3 coolers I believe. The extra one is on the bottom.

[MPR]

Originally Posted by Coconut

I special ordered my car with it just because I like the look of the bigger brakes. A few youtube reviews stated the stock brakes as being a weak point so I guess the bigger ZTK front brakes would be a welcome upgrade.

From what I read there is no stopping power advantage, it’s only for better cooling; cooling is also how BMW markets this package. Not sure how accurate that is given the rotors are larger and more pad is making contact, you’d think it’s helping the car stop.

[inevitab1e]

I wonder how much heavier the ZTK option is ?

[rautoiua]

Originally Posted by inevitab1e

I wonder how much heavier the ZTK option is ?

What I can confirm is that in Europe you'll see how the average consumption in the configurator will go from 8.2l/100km to 8.7l/100km when you select ZTK package.

[Pentland]

Originally Posted by MPR

From what I read there is no stopping power advantage, it’s only for better cooling; cooling is also how BMW markets this package. Not sure how accurate that is given the rotors are larger and more pad is making contact, you’d think it’s helping the car stop.

Basic physics. Bigger brakes ≠ better stopping power. Less overall weight and bigger tyre size/ footprint will stop you quicker. Bigger brakes will provide better cooling and more consistent repeated stopping.

[MPR]

Originally Posted by Pentland

Basic physics. Bigger brakes ≠ better stopping power. Less overall weight and bigger tyre size/ footprint will stop you quicker. Bigger brakes will provide better cooling and more consistent repeated stopping.

But wouldnt more surface area of pad touching rotor improve grip/stopping power? Imagine 1 square inch of pad vs 12 square inches of pad making contact with a rotor. I’m no physics expert.

[Pentland]

Originally Posted by MPR

But wouldnt more surface area of pad touching rotor improve grip/stopping power? Imagine 1 square inch of pad vs 12 square inches of pad making contact with a rotor. I’m no physics expert.

No. You can grip and stop the disc in an instant very easily. That’s not the hard part of braking. However, the vehicle will still be moving (without ABS skidding).
Bigger pads etc give bigger surface area and allow better cooling for more consistent repeated braking (less fade)

[felixlamb]

As long as your brakes are strong enough to make your wheels lock up and require ABS intervention, bigger brakes aren't going to make you brake quicker, that requires grippier tyres instead.

Now, bigger brakes do have a higher surface area so cooling is better, and bigger brakes also have a higher thermal mass, allowing them to accept more thermal energy as it can be spread out over a larger amount of mass.

Plus, they look better. Realistically, that's all that most of us care about really...