3rd gen G29 BMW Z4 (2019-202X)

[Guff]

Was going through the articles that @2JZ-No-Sh*t posted and this one caught my eye:

https://www.autocar.co.uk/car-news/new-cars/bmw-z4-prototype-2018-first-drive-new-roadster

So there are performance brakes, electronic adaptive dampers, adjustable suspension with MacPherson steel struts at the front and a multi-link set-up at the rear, and a limited-slip differential.

As far as I know, it's the first article that stated the suspension types. I was looking at the videos trying to figure it out but figured it would be multi-link in the rear and double wishbone in the front. Mac Struts in the front is interesting, I would have figured they had the space to throw a double wishbone setup in the front considering the motor isn't very wide, but they went with the single arm setup. Interested to see how dynamic the front end is under load.

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[supraboi]

http://www.autobild.de/artikel/bmw-z4-2018-test-erste-infos-motoren-marktstart-5257988.html

Driving: The Z4 is a genuine Roadster (UPDATE!)

Our test drive in a prototype of the M40i took place on the BMW racetrack in Miramas, southern France. There it immediately noticed that the new Z4 is spurt-strong and curvy, without overdoing it. This is also due to its first-class Reihensechser. There is hardly a competitive engine that combines speed and smoothness so well. This fits the eight-speed automatic, which is the first BMW automatic transmission in terms of timing and pace on par with the previously unattained Porsche PDK. In other words, even a good driver does not do much better. In the driving mode "Sport Plus" the six-cylinder is even more toxic and the Z4 rear has significantly more freedom of movement. To give better feedback, steering requires more effort in this mode. Although the handling of the 1490-kilogram Z4 is addictive, it also has a few minor weaknesses: The front-axle grip when turning leaves something to be desired, and when braking the Roadster has too strong a tendency to understeer. BMW could give the open athlete a little more of the known from the M2 jaggedness. Nevertheless, the new Z4 is not a soft-washed cruiser, but a real roadster.

 

[Guff]

http://www.autobild.de/artikel/bmw-z4-2018-test-erste-infos-motoren-marktstart-5257988.html

1490kg is nearly a hundred pounds lighter than the 3384 lbs that everyone else was quoting. I guess we'll have to wait on something official from BMW themselves.

 

[soundman414]

Was going through the articles that @2JZ-No-Sh*t posted and this one caught my eye:

https://www.autocar.co.uk/car-news/new-cars/bmw-z4-prototype-2018-first-drive-new-roadster



As far as I know, it's the first article that stated the suspension types. I was looking at the videos trying to figure it out but figured it would be multi-link in the rear and double wishbone in the front. Mac Struts in the front is interesting, I would have figured they had the space to throw a double wishbone setup in the front considering the motor isn't very wide, but they went with the single arm setup. Interested to see how dynamic the front end is under load.

Here are some screenshots from a different video posted on BMWBlog's Youtube page, showing a tech removing the rear wheel and showing off some of the suspension. The other shows the rear tire being lowered and you can see the lower control arm.

():

 

[MA617M]

remember, the bimmerpost (even if accurate) was at a time when the A90 had a B58 under the hood (the mules still do)

the production A90 has a different engine, with a new head and iron block. hence the +20kg weight penalty.

take it with a grain of salt.

 

[2JZ-No-Sh*t]

I think the info from bimmerpost has been a good guide if you will, but I wouldn't treat everything from that fourm as official news or a press release. Apparently their leaked codes list was wrong about the Z4 getting a manual.

 

[MA617M]

exactly, and there is zero rationale in a sports car marketed as the halo model with less power than a GT86.

 

[Jdmuscle]

exactly, and there is zero rationale in a sports car marketed as the halo model with less power than a GT86.

Anything less than 350 ain’t halo material either.. I’m hoping the Supra has at least a 375hp output. Looks like the car will be over 3k lbs basing it on what’s reported here about the Z4. Hopefully it’s not the case.. and the car is as light as 2900 lbs.

 

[Modal170]

Anything less than 350 ain’t halo material either.. I’m hoping the Supra has at least a 375hp output. Looks like the car will be over 3k lbs basing it on what’s reported here about the Z4. Hopefully it’s not the case.. and the car is as light as 2900 lbs.

Alright, max 3100lbs at 380-425HP.

You reading this Toyota? We want you to demolish everything around you, at .a reasonable price point. Especially without the manual.

 

[MA617M]

A70 all but confirmed 1380kg (+20kg due to new engine)

And I agree. While I believe Toyota know what they're doing, and it will be a weapon, I think it needs at least 300kW.

I don't want to buy an A90 supra ans have it the least powerful car in the garage.

 

[Jdmuscle]

So here is a snippet from the article by Autoblog...


As for its looks, I laid eyes on un-camouflaged Z4s in matte black and red and felt the overall design seemed more successful in the understated dark scheme than the red finish. While the clamshell hood integrates nicely with the body, some of the overall proportions seem a bit mismatched, a trait which was emphasized when the sheetmetal was finished in red. Interestingly, BMW has departed tradition in a few ways: The headlamps take a vertical, not trademark horizontal orientation, and the kidney grilles incorporate mesh pattern in the space between the ribs.

It’s a bit concerning to read about the proportion .. thoughts?

 

[Guff]

So here is a snippet from the article by Autoblog...


As for its looks, I laid eyes on un-camouflaged Z4s in matte black and red and felt the overall design seemed more successful in the understated dark scheme than the red finish. While the clamshell hood integrates nicely with the body, some of the overall proportions seem a bit mismatched, a trait which was emphasized when the sheetmetal was finished in red. Interestingly, BMW has departed tradition in a few ways: The headlamps take a vertical, not trademark horizontal orientation, and the kidney grilles incorporate mesh pattern in the space between the ribs.

It’s a bit concerning to read about the proportion .. thoughts?

Idk, looks fine to me.

 

[mas921]

Was going through the articles that @2JZ-No-Sh*t posted and this one caught my eye:

https://www.autocar.co.uk/car-news/new-cars/bmw-z4-prototype-2018-first-drive-new-roadster



As far as I know, it's the first article that stated the suspension types. I was looking at the videos trying to figure it out but figured it would be multi-link in the rear and double wishbone in the front. Mac Struts in the front is interesting, I would have figured they had the space to throw a double wishbone setup in the front considering the motor isn't very wide, but they went with the single arm setup. Interested to see how dynamic the front end is under load.

Am actually more excited now that its a McStrut. as, generally, the double wishbones have superior camber curve, but in practice the struts can be designed in a manner to render a great camber curve too. while weighing like 1/2 of the unsprung weight of a double wishbone setup.

Most BMWs and Porche 911's are built with these "advanced" McStruts. And then there are some bonkers designs like the new Type R's "struts" that behave like double wishbones ...

Cost is decreased quite s but too, and if that article is correct "steel arms" are definitely a sign of cost cutting.

Additionally McStruts are more aftermarket/modding friendly; camber is adjusted with a simple $20 camber bolt (which controls scrub radius for more steering feel/road texture transmission through the rack), caster (what makes the steering feel "heavy" and springs back to center) and camber/KPI can also be adjusted by the top hat, instead of an expensive set of racing arms.

and....drifters who will mod for max angle clearnace will love this too!

It's kinda of a compromise; that's well worth its benefits.

 

[Levi]

So here is a snippet from the article by Autoblog...

As for its looks, I laid eyes on un-camouflaged Z4s in matte black and red and felt the overall design seemed more successful in the understated dark scheme than the red finish. While the clamshell hood integrates nicely with the body, some of the overall proportions seem a bit mismatched, a trait which was emphasized when the sheetmetal was finished in red. Interestingly, BMW has departed tradition in a few ways: The headlamps take a vertical, not trademark horizontal orientation, and the kidney grilles incorporate mesh pattern in the space between the ribs.

It’s a bit concerning to read about the proportion .. thoughts?

Also a concern for me. You can thank Mustang drivers for hitting pedestrians. Truck with modified bullbars are way more dangerous than anything else (if there is anything as non dangerous vehicle-to-pedestrian collision). Sports car are sold in low numbers, cannot they be exempt from pedestrian safety standards?

Am actually more excited now that its a McStrut. as, generally, the double wishbones have superior camber curve, but in practice the struts can be designed in a manner to render a great camber curve too. while weighing like 1/2 of the unsprung weight of a double wishbone setup.

Most BMWs and Porche 911's are built with these "advanced" McStruts. And then there are some bonkers designs like the new Type R's "struts" that behave like double wishbones ...

Cost is decreased quite s but too, and if that article is correct "steel arms" are definitely a sign of cost cutting.

Additionally McStruts are more aftermarket/modding friendly; camber is adjusted with a simple $20 camber bolt (which controls scrub radius for more steering feel/road texture transmission through the rack), caster (what makes the steering feel "heavy" and springs back to center) and camber/KPI can also be adjusted by the top hat, instead of an expensive set of racing arms.

and....drifters who will mod for max angle clearnace will love this too!

It's kinda of a compromise; that's well worth its benefits.

Don't believe the Marketing team, McPherson Struts are cheap. That is all. No way around. Porsche 911 race car has double wishbone swapped in. If true this is a huge disappointment. Ok for GT86, not acceptable for Supra. RX7 was double wishbone all round. Same for Honda Integra.

remember, the bimmerpost (even if accurate) was at a time when the A90 had a B58 under the hood (the mules still do)

the production A90 has a different engine, with a new head and iron block. hence the +20kg weight penalty.

take it with a grain of salt.

Iron block? Like old Supra and old Z4? That is going to be heavy, and at the nose.

 

[MA617M]

That's correct. It adds +20kg and the weight distribution is unaffected according to insiders. Chosen for its ability to handle bulk power

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