[moff]

So I am getting close to finalising a spec, and I noticed that after moving to the 19"s from the 20"s that I now cannot get the M Technology Pack which has better brakes and better battery cooling.

Anyone else noticed this?? So frustrating... might just have to order the 20"s and buy more narrow tyres for the wheels.

The pack detail:

....features increased heat capacity of the braking system and the cooling system that guarantees a long-lasting high performance under extreme driving conditions (similar to motorsport) (especially in combination with high outside temperatures). Includes upgrades for the drive train cooling system and the M Sport braking system.

Available with 20" 868 M Double-spoke Bi-colour Alloy Wheels on the M50 model.

[Needsdecaf]

Brakes probably don't clear the smaller wheels. Not uncommon.

[4monks]

I'm not sure what the cooling is. I suspect this might be sadly a cut and paste from the MTech pack on other cars where there is an additional oil cooler. I've not seen anything on battery cooling.

[moff]

Originally Posted by 4monks

I'm not sure what the cooling is. I suspect this might be sadly a cut and paste from the MTech pack on other cars where there is an additional oil cooler. I've not seen anything on battery cooling.

I guess "Includes upgrades for the drive train cooling system" means battery cooling.

[lnaukkar]

The drive train cooling is for 4 series, but for i4 that option is only the bigger front calibers and nothing else.

[moff]

Originally Posted by lnaukkar

The drive train cooling is for 4 series, but for i4 that option is only the bigger front calibers and nothing else.

Thanks - that's good to know, although I now want the larger brakes

[Frans Jazz4ff]

Originally Posted by moff

So I am getting close to finalising a spec, and I noticed that after moving to the 19"s from the 20"s that I now cannot get the M Technology Pack which has better brakes and better battery cooling.

Anyone else noticed this?? So frustrating... might just have to order the 20"s and buy more narrow tyres for the wheels.

The pack detail:

....features increased heat capacity of the braking system and the cooling system that guarantees a long-lasting high performance under extreme driving conditions (similar to motorsport) (especially in combination with high outside temperatures). Includes upgrades for the drive train cooling system and the M Sport braking system.

Available with 20" 868 M Double-spoke Bi-colour Alloy Wheels on the M50 model.

Strange, M sport braking system is standard in red or blue in the Netherland.

[techwhiz1]

Originally Posted by Frans Jazz4ff

Strange, M sport braking system is standard in red or blue in the Netherland.

The Tech pack gets larger rotors.

[Encanto]

M Technology package in the i4 is front 374mm rotors (348mm standard) and bigger 4-piston calipers.

[jpuffmasterpuffpuffpuff69]

So there is no additional cooling for sure?

[Encanto]

Originally Posted by jpuffmasterpuffpuffpuff69

So there is no additional cooling for sure?

No… this “additional cooling” was a bad copy and paste from the 4-Series M Tech package.

[spool twice]

seems like this package was recently renamed....now it's called "high performance tire package"...at least in the US.

The brakes should be the same as the M340/M440i, which are M-sport brakes but not as large as the M-performance accessory brakes.

[mbchris]

I ordered 3FW 20" wheels. 33T M technology package added at no cost. USA build.

[Encanto]

Originally Posted by spool twice

seems like this package was recently renamed....now it's called "high performance tire package"...at least in the US.

The brakes should be the same as the M340/M440i, which are M-sport brakes but not as large as the M-performance accessory brakes.

The M Technology package brakes are the same as the M Performance brakes -up-sized calipers, 374mm rotors- except that the M Performance rotors are dimpled and slotted.

[spool twice]

Originally Posted by Encanto

The M Technology package brakes are the same as the M Performance brakes -up-sized calipers, 374mm rotors- except that the M Performance rotors are dimpled and slotted.

Makes sense, BMW has just been vague about what actually is part of the i4 package. It doesn't indicate larger brakes, just 33t, which can be different depending on series/model.

The larger brakes could possibly be the other reason why going from 18 to 19" wheels is seems to only be a 25 mile range hit on the edrive40, but going from 19 to 20" is almost double the range hit on the M50 because of the heavier brake hardware.

[jpuffmasterpuffpuffpuff69]

Wider, stickier, heavier tires probably cause most of the drop when going to the 20" wheels. Brake weight has little impact on fuel economy since it's all closer to the hub. Calipers aren't spinning, too. The wheel and tire weight matter more. I guess it all adds up.

The new text on the US website is:
"High Performance Tire Package
$2,500
Enhance the aggressive appeal of your vehicle with a body-colored rear spoiler, increased braking capacity for extreme driving conditions, and wheel arch moldings on the rear axle. Also included are wider, high-performance tires offering improved traction, reduced stopping distance and enhanced dynamic response."

Nothing about cooling anymore.

So is 2500 worth it for upgraded calipers and massively upgraded wheels and tires? If you want better handling, I'm guessing a huge yes. Braking doesn't matter so much because it's an EV, but extra capacity is a good thing.

[techwhiz1]

Originally Posted by jpuffmasterpuffpuffpuff69

Wider, stickier, heavier tires probably cause most of the drop when going to the 20" wheels. Brake weight has little impact on fuel economy since it's all closer to the hub. Calipers aren't spinning, too. The wheel and tire weight matter more. I guess it all adds up.

The new text on the US website is:
"High Performance Tire Package
$2,500
Enhance the aggressive appeal of your vehicle with a body-colored rear spoiler, increased braking capacity for extreme driving conditions, and wheel arch moldings on the rear axle. Also included are wider, high-performance tires offering improved traction, reduced stopping distance and enhanced dynamic response."

Nothing about cooling anymore.

So is 2500 worth it for upgraded calipers and massively upgraded wheels and tires? If you want better handling, I'm guessing a huge yes. Braking doesn't matter so much because it's an EV, but extra capacity is a good thing.

I went for it just for the wider wheels and brakes.
My mileage requirement is 250 so anything extra is a plus. Also I suspect in Eco mode mileage will be better. I think, and don't quote me, the front motor is not engaged for drive in Eco mode. Since it also doesn't have permanent magnets it should freewheel with out a lot of losses.

[Haywood]

Originally Posted by jpuffmasterpuffpuffpuff69

Wider, stickier, heavier tires probably cause most of the drop when going to the 20" wheels. Brake weight has little impact on fuel economy since it's all closer to the hub. Calipers aren't spinning, too. The wheel and tire weight matter more. I guess it all adds up.

The new text on the US website is:
"High Performance Tire Package
$2,500
Enhance the aggressive appeal of your vehicle with a body-colored rear spoiler, increased braking capacity for extreme driving conditions, and wheel arch moldings on the rear axle. Also included are wider, high-performance tires offering improved traction, reduced stopping distance and enhanced dynamic response."

Nothing about cooling anymore.

So is 2500 worth it for upgraded calipers and massively upgraded wheels and tires? If you want better handling, I'm guessing a huge yes. Braking doesn't matter so much because it's an EV, but extra capacity is a good thing.

Interesting when you scroll down on the package, there's this:

M Technology package
Increased capacity of the braking system for improved performance under extreme driving conditions, particularly when driving in very high temperatures.

Doesn't mention cooling per se, but it does say improved braking under high temperatures.

[jpuffmasterpuffpuffpuff69]

Originally Posted by Haywood

Interesting when you scroll down on the package, there's this:

M Technology package
Increased capacity of the braking system for improved performance under extreme driving conditions, particularly when driving in very high temperatures.

Doesn't mention cooling per se, but it does say improved braking under high temperatures.

It might mean some kind of ducting. It definitely refers to the increased capacity of larger discs, calipers, and possibly pads.

I'll likely use one-pedal driving 95% of the time.