[TheStanman]

Originally Posted by Sedan_Clan

Yep, including the Porsche 911. They keep getting heavier and heavier.

This is actually not the case. 997, 991, and 992 all weigh roughly the same. Official specs show some increase but that's due to methodology.

Here is a comparison of 997 to 992. Only a 30lb difference over 15 years. Porsche has invested in lightweight construction to offset modern tech.

[frankiebones]

Originally Posted by RugbyBro

Anecdotally, when F8X was launched, the only guy I remember really liking it off the bat was CH. Everyone else was quite luke-warm and kind of followed the same group think on turbos, steering, ride-comfort, etc. I always found it funny that to them ZCP miraculously fixed everything that was wrong with F8X on launch according to reviewers and they used that as the impetus for their about-face; and when I say this, I don't mean to downplay ZCP improvements but some of these reviewers/influencer talk about it like it's a fundamentally different car... again more group think.

I agree with your group think assessment on the F80 reviews. However, the ZCP WAS a fundamentally different car to drive. The base F80 had a lot of issues, a lot. I owned one and loved it, but there was a of times I would say "man my old S4 did this better." The ZCP DID address them all (for me). I did 4 or 5 track days in a ZCP F80 and was driving my base F80 to and from the track. The drive home was full of resentment and vitriol that I, being new to the brand, didn't click the "ZCP box."

I remedied it with a CS but I miss by 6MT a lot lol.

[Sedan_Clan]

Originally Posted by TheStanman

This is actually not the case. 997, 991, and 992 all weigh roughly the same. Official specs show some increase but that's due to methodology.

Here is a comparison of 997 to 992. Only a 30lb difference over 15 years. Porsche has invested in lightweight construction to offset modern tech.

[img]https://i.ibb.co/Y2rYxX6/Screenshot-...1-You-Tube.jpg[/img]

[img]https://i.ibb.co/HNMQ7JS/Screenshot-...3-You-Tube.jpg[/img]

There is more than a 30 lb. difference. A 991 Turbo S, for example, was 3587 lbs. A 992 Turbo S is 3663. The point was they are always gaining weight.

[Scorp!on]

Originally Posted by Sedan_Clan

There is more than a 30 lb. difference. A 991 Turbo S, for example, was 3587 lbs. A 992 Turbo S is 3663.the point was they are always gaining weight.

BMW iS sO hEaVy.
DIN-Weight Porsche 992 Turbo S: 1640 KG

and it costs more than double.
But yeah, stupid BMW !!!!

[natedog7700]

Originally Posted by jkap27

F80 was like 3600 lbs with a stripper car right? I think bmw shifted to weighing cars with some of the optional equipment that you'd expect to see in an actual street car which could make 100 pounds or more of a difference

About 300lb lighter than the G80, this is with a full tank vs the 1/8th tank for the G80

https://f80.bimmerpost.com/forums/showthread.php?t=974479

[natedog7700]

Originally Posted by jkap27

Yea 200 sounds about right...I keep seeing people say it's 500 pounds heavier than an f80 and it is just blowing my mind lol or the awd will be the same weight as an m5

Closer to 300 if you consider the 1/8th tank of gas.

[RugbyBro]

Originally Posted by frankiebones

I agree with your group think assessment on the F80 reviews. However, the ZCP WAS a fundamentally different car to drive. The base F80 had a lot of issues, a lot. I owned one and loved it, but there was a of times I would say "man my old S4 did this better." The ZCP DID address them all (for me). I did 4 or 5 track days in a ZCP F80 and was driving my base F80 to and from the track. The drive home was full of resentment and vitriol that I, being knew to the brand, didn't click the "ZCP box."

I remedied it with a CS but I miss by 6MT a lot lol.

I don't think the livability/drivability concerns were addressed by ZCP specifically, I think it was iStep. I think reviewers and influencers were just sent ZCP cars and they incorrectly attributed all the positive changes to ZCP. I don't necessarily fault them for doing so though, as they aren't really F8X enthusiasts or owners so they wouldn't really know or care to get that deep to realize iStep had changed the cars globally. Having driven an earlier 15 and having my 16 on 2018+ iStep, definitely a difference, less spikey/hairy and DCT (pre-GTS flash) was a bit less fussy

[frankiebones]

Originally Posted by RugbyBro

I don't think the livability/drivability concerns were addressed by ZCP specifically, I think it was iStep. I think reviewers and influencers were just sent ZCP cars and they incorrectly attributed all the positive changes to ZCP. I don't necessarily fault them for doing so though, as they aren't really F8X enthusiasts or owners so they wouldn't really know or care to get that deep to realize iStep had changed the cars globally. Having driven an earlier 15 and having my 16 on 2018+ iStep, definitely a difference, less spikey/hairy and DCT (pre-GTS flash) was a bit less fussy

The iStep in most base cars was never updated but mine was. I only updated mine in 2018 in advance of installing the MPHAS because it was recommended. It didn't do much other than get rid of the dead zone in the middle of the steering wheel and I drove with the latest iStep for about 3 weeks until I had the springs installed at recommended height.

The spring rates and dampers on the ZCP made a lot more difference to the driving experience than the iStep upgrades.

You're talking to the one guy that did everything and I mean everything to turn his base into a ZCP.

I was going to order an F80 ZCP 6MT in Fire Orange but they went out of production earlier than expected and my order was cancelled. Ended up in a DCT CS.

[jkap27]

Originally Posted by natedog7700

Closer to 300 if you consider the 1/8th tank of gas.

Looks like that F80 was manual thats gotta be like a 50 pound difference right? Let's call it 250 and say we're both right also wow does gasoline really weigh that much? I wouldve thought 7/8ths of a tank would weigh 50 pounds max. I had no idea

[CanAutM3]

Originally Posted by jkap27

Looks like that F80 was manual thats gotta be like a 50 pound difference right? Let's call it 250 and say we're both right also wow does gasoline really weigh that much? I wouldve thought 7/8ths of a tank would weigh 50 pounds max. I had no idea

A full 60L tank weighs ~100lb

[RugbyBro]

Originally Posted by frankiebones

The iStep in most base cars was never updated but mine was. I only updated mine in 2018 in advance of installing the MPHAS because it was recommended. It didn't do much other than get rid of the dead zone in the middle of the steering wheel and I drove with the latest iStep for about 3 weeks until I had the springs installed at recommended height.

The spring rates and dampers on the ZCP made a lot more difference to the driving experience than the iStep upgrades.

You're talking to the one guy that did everything and I mean everything to turn his base into a ZCP.

I was going to order an F80 ZCP 6MT in Fire Orange but they went out of production earlier than expected and my order was cancelled. Ended up in a DCT CS.

Yup I don’t disagree with you on the suspension and performance driving dynamics, I’m specifically talking about hot power is delivered and put to the ground (engine, DCT, diff) which is a big part of what the reviewer clique talks about ZCP fixing. To me there was a noticeable difference as the torque cliff up front was smoothed out a bit. I understand why some people feel like the car got tamed down a bit. I personally haven’t felt a drastic difference between my 16 on 18+ iStep and the ZCPs I’ve driven, but I haven’t driven ZCP in any serious performance context. Also I am lowered on MPHAS and have GTS stuff coded which all make a noticeable difference in different ways, so I’m working purely off what I remember my car driving like completely stock. I guess it goes to show I wouldn’t have made those “improvements” if I didn’t think they would add positively to the car haha. I also appreciate that it’s incumbent on the owner to request an iStep upgrade on pre-LCI cars so there are probably loads out there with the OG iStep calibration!

[BimmerFix]

ZCP made a world of difference. The CS & GTS even more so

Can't wait to see those later iterations along the lifeline of the G generation.

A G8X M - CS/CSL will be magnificent. No doubt about it

By then even more advancements in tech , engineering, & lightweight materials will be made.

I'm sure it's being worked on by our german brothers/sisters even right now. But of course theres a business side of things.

Same story for the LCI

BMW and most car manufacturers been doing this since Moses wore short pants.

[antzcrashing]

So its lighter than a Ferrari California. That should do.

[Boss330]

Originally Posted by CanAutM3

I am not an expert, only a technical geek, but IMO it is because they made it a an overall key design criteria. It is the cumulation of a concerted effort to keep weight down on the F82 on many components that yielded the lower weight over the F32. Meaning that the few kilos of the strut brace gets added to all the grams and kilos saved elsewhere. There was also effort to reduce the weight of the "added" components as much as possible.

Just to name a few items from the top of my head (F82 vs F32)

• CF roof
• CF driveshaft
• Lightweight wheels
• Lightweight structural/reenforcing elements (CF and aluminum)
• Roof CF bow tie
• Composite trunk lid
• Aluminum hood and fenders
• Aluminum suspension components
• Scalloped wheel hubs
• Bespoke aluminum rear subframe
• Aluminum dampers
• Li-ion battery

Sadly, some of those items were removed during the F8X lifecycle (CFRP driveshaft and Mg oil pan for example) and we did see the weight creep up slightly. Thankfully, they were maintained for the M4cs.

Disclaimer to the fanboys: I am not praising/defending the F8X here, just answering a question.

The G8x has most of the lightweight components on that list as well, some it don't and some of the G8x items are not on the F8x

G8x:

Aluminium bonnet (as the F8x)
Aluminium doors (not on the F8x list above)
Lightweight crankshaft (lighter than S55)

[RugbyBro]

Originally Posted by Boss330

Lightweight crankshaft (lighter than S55)

I’m still waiting to see some sort of doc that confirms this is the case. In the M3/M4 explained vid the engineer says it’s 19.4kg but in the S58 technical doc, it’s 21.2kg; for reference S55 crank is 21.1kg according to its technical doc. Could well be the case that they revised the crank significantly or listed an incorrect weight in their technical doc (although that’s been out for over 1.5 years at this point)

[Boss330]

Originally Posted by RugbyBro

I’m still waiting to see some sort of doc that confirms this is the case. In the M3/M4 explained vid the engineer says it’s 19.4kg but in the S58 technical doc, it’s 21.2kg; for reference S55 crank is 21.1kg according to its technical doc. Could well be the case that they revised the crank significantly or listed an incorrect weight in their technical doc (although that’s been out for over 1.5 years at this point)

That's the doc for the S58 in the X3/4M you are referring to?

It's not 100% clear, but my understanding is that the crank in the G8x S58 is lighter than the one in the X models.

[scoale]

Okay, how many of you would accept that grill and a couple hundred extra lbs on your significant other as long as they were faster


JK, JK, JK, JK, JK, JK.....just trying to lighten it up

[M3AWD]

Originally Posted by Boss330

That's the doc for the S58 in the X3/4M you are referring to?

It's not 100% clear, but my understanding is that the crank in the G8x S58 is lighter than the one in the X models.

That's correct. BMW confirmed that the weight savings is vs. the X3M/X4M crank shaft.

[RugbyBro]

Originally Posted by M3AWD

That's correct. BMW confirmed that the weight savings is vs. the X3M/X4M crank shaft.

Do you know where? Genuinely curious, not asking facetiously

[Boss330]

Originally Posted by scoale

Okay, how many of you would accept that grill and a couple hundred extra lbs on your significant other as long as they were faster


JK, JK, JK, JK, JK, JK.....just trying to lighten it up

My GF has silicone boobs. They add both weight and size, but I don't complain... 😉

[M3AWD]

Originally Posted by RugbyBro

Do you know where? Genuinely curious, not asking facetiously

I believe it was one of the BMW engineers who said it in a BMWBLOG video.

We were "all" thinking the savings was vs. the B58 but he confirmed its vs. the X3M/X4M S58

[CanAutM3]

Originally Posted by RugbyBro

Do you know where? Genuinely curious, not asking facetiously

See here: https://g80.bimmerpost.com/forums/sh....php?t=1804190