[GrannyShiftG80]

Originally Posted by Tag

The G80/2C have had their entire powertrain and suspension retuned. The difference between the F and G series is the G Competition models are all M xDrive so it'll be harder to find specific info on them, but they have definitely been retuned to handle the extra power of the boosted S58 and grip that M xDrive offers. The M2C will be no different sans M xDrive (TBD?), but it'll get a retuning of the engine for more power, the chassis dynamics ala M stablity, steering, braking, M LSD retuning and suspension dampening retuning. They don't need to replace parts, but they may add additional bracing. It's mostly all software tuning.

I thought there was no difference between the g8x comp and non comp

I thought those differences between comp and non comp were only for the f8x

[Tag]

Originally Posted by M3WC

Huh...G comp models are all xdrive?

I have not found any documentation about different software tuning for adaptive dampers or M-diff(base vs comp). I would like to see it, if it is available.

The F80/82 Comp pack did bring new springs, dampers and anti-roll bars. Drive modes comfort, sport and sport+ were reconfigured. Adaptive dampers were made standard.

Yeah, I wrote that hastily from my phone. I meant all the M xDrive models… complicates the lineup. I can’t find anything concrete either, but I do know BMW has never just bumped the power on an M Competition model without retuning multiple components. Throttle mapping, Steering, braking, dampening, LSD etc.

[ronin13013]

drive train and horse power.

Originally Posted by Allenssmart

I thought there was no difference between the g8x comp and non comp

I thought those differences between comp and non comp were only for the f8x

[Albator_IIII]

Originally Posted by Allenssmart

I thought there was no difference between the g8x comp and non comp

I thought those differences between comp and non comp were only for the f8x

G8X Comp are xDrive and AT only. In Canada anyway. No RWD and no MT.

[M3WC]

Originally Posted by Tag

Yeah, I wrote that hastily from my phone. I meant all the M xDrive models… complicates the lineup. I can’t find anything concrete either, but I do know BMW has never just bumped the power on an M Competition model without retuning multiple components. Throttle mapping, Steering, braking, dampening, LSD etc.

I have seen this topic discussed multiple times on G8x M3/M4 forums. No difference has been found, other than the engine tuning(another 4 psi).

The comp pack doesn't really mean what it use to, with physical hardware changes along with tuning changes.

[M3WC]

Originally Posted by Albator_IIII

G8X Comp are xDrive and AT only. In Canada anyway. No RWD and no MT.

US has G8x base(MT), Comp RWD(AT), Comp xdrive(AT).

Originally Posted by Allenssmart

I thought there was no difference between the g8x comp and non comp

There isn't until proven otherwise. If there was BMW would have used it in marketing like they did for the F8x. If there are changes to suspension tuning and M-diff tuning, I would love to read about it. Xdrive models are a different story.

Originally Posted by Allenssmart

I thought those differences between comp and non comp were only for the f8x

Yup, F8x Comp pack got new dampers, springs, roll bars. Driving modes and M-diff remapped. Adaptive dampers standard. Also got new lighter seats.

[Rx-7ames]

Originally Posted by Tag

the G Competition models are all M xDrive

You can get the M3/4 Comp without xDrive if you want a RWD model.

[(K)]

Coming back to this, now that the 3.0 CSL has been unleashed with a manual, how sound is that argument from BMW about the transmission not being able to handle the power?

Granted I don't know if it's the same unit as the more plebian cars but it's obvious that they CAN do it.

[blinkme323]

Originally Posted by Rx-7ames

You can get the M3/4 Comp without xDrive if you want a RWD model.

That model was discontinued. I think the take volume was ridiculously low.

[curtdragon]

Originally Posted by (K)

Coming back to this, now that the 3.0 CSL has been unleashed with a manual, how sound is that argument from BMW about the transmission not being able to handle the power?

Granted I don't know if it's the same unit as the more plebian cars but it's obvious that they CAN do it.

I don’t think anyone thinks they can’t do it. But using a $750000 car as an example doesn’t help the case lol

I don’t know that anyone knows what limit of the transmission is. The clutch tops at somewhere between 600-660 whp. I’m sure there’s a manual out there that can hold more as the hellcat comes in a manual too. It’s just I think the low volume and maybe high cost for research and development and maybe the unit doesn’t make sense for BMW

[Basketcase]

Originally Posted by (K)

Coming back to this, now that the 3.0 CSL has been unleashed with a manual, how sound is that argument from BMW about the transmission not being able to handle the power?

Granted I don't know if it's the same unit as the more plebian cars but it's obvious that they CAN do it.

Thats the FIRST thing I noticed when reading the release... so much for BMWs reasoning on HP and the 6MT... Unless of course the tranny is a different model which we don't know obviously. But I feel like it would be the same (just for cost savings), with new clutch and maybe a stronger fork or synchros at the most. I honestly think with a higher clamping force clutch, the tranny would handle more HP perfectly fine!

When I was building my e46 M3, there was Horsepower Freaks (anyone remember them still?) building turbo'd M3s making over 1,000hp on the 6MTs. At that time the SMG was the limiting factor for big power builds so everyone went 6MT.. very similar when I had my e92 M3 (GS6-53BZ tranny vs the 45BZ now?) and everyone was SC'ing them into the 700hp+ territory and the 6MTs would hold more than the DCTs, now it seems its the opposite?

[fanofbmwe46]

Originally Posted by Basketcase

Thats the FIRST thing I noticed when reading the release... so much for BMWs reasoning on HP and the 6MT... Unless of course the tranny is a different model which we don't know obviously. But I feel like it would be the same (just for cost savings), with new clutch and maybe a stronger fork or synchros at the most. I honestly think with a higher clamping force clutch, the tranny would handle more HP perfectly fine!

When I was building my e46 M3, there was Horsepower Freaks (anyone remember them still?) building turbo'd M3s making over 1,000hp on the 6MTs. At that time the SMG was the limiting factor for big power builds so everyone went 6MT.. very similar when I had my e92 M3 (GS6-53BZ tranny vs the 45BZ now?) and everyone was SC'ing them into the 700hp+ territory and the 6MTs would hold more than the DCTs, now it seems its the opposite?

I wonder how many people buying 1 of the 50 3.0 CSLs will actually drive it vs let it appreciate sitting in a climate controlled garage. And if driving it, I wonder how many will actually use all the horsepower and push it to the limit.

[T_U_D]

Originally Posted by (K)

Coming back to this, now that the 3.0 CSL has been unleashed with a manual, how sound is that argument from BMW about the transmission not being able to handle the power?

Granted I don't know if it's the same unit as the more plebian cars but it's obvious that they CAN do it.

Allegedly it is a totally new transmission for BMW. Given that the production run is limited to 50 units and at the cost of €700,000 per vehicle, the likelihood that we will ever see the transmission trickle down into other vehicles is fairly slim, at least not in one that we commoners can afford.

[GrannyShiftG80]

Originally Posted by T_U_D

Allegedly it is a totally new transmission for BMW. Given that the production run is limited to 50 units and at the cost of €700,000 per vehicle, the likelihood we will ever see the transmission trickle down into other vehicles is fairly slim, at least not in one that we commoners can afford.

But if they made a brand new transmission for just 50 units

Wouldn't it make financial sense to also have that trickle down into their production cars? Because they already spent all the time and money investing into a new gearbox

[curtdragon]

Originally Posted by Allenssmart

But if they made a brand new transmission for just 50 units

Wouldn't it make financial sense to also have that trickle down into their production cars? Because they already spent all the time and money investing into a new gearbox

Into what though? When everything goes EV what use is a manual transmission?

[aerobod]

Originally Posted by Allenssmart

But if they made a brand new transmission for just 50 units

Wouldn't it make financial sense to also have that trickle down into their production cars? Because they already spent all the time and money investing into a new gearbox

Quite likely they will use a transmission manufacturer such as Xtrac or Sadev who can build custom transmissions for motorsport in the $20,000 to $50,000 range, as opposed to the tens of millions it would cost ZF or other mainstream manufacturers to design and tool up for small production runs. Something like this: https://shop.bowlertransmissions.com...g-transmission, but without the sequential activation.

[GrannyShiftG80]

Originally Posted by curtdragon

Into what though? When everything goes EV what use is a manual transmission?

Into an M2/m3/m4/m5 comp

[T_U_D]

Originally Posted by Allenssmart

But if they made a brand new transmission for just 50 units

Wouldn't it make financial sense to also have that trickle down into their production cars? Because they already spent all the time and money investing into a new gearbox

You are not seeing the big picture. It does not need to make financial sense. What limited production vehicle ever does? 50 units is exceptionally low and clearly the MSRP dictates what they need to make to be profitable.

Do the math… €700,000 X 50 = €35 million. It is not like there was a ton of R&D performed for this vehicle given that it is built on essentially a G82.

[Karmic Man]

Originally Posted by (K)

Coming back to this, now that the 3.0 CSL has been unleashed with a manual, how sound is that argument from BMW about the transmission not being able to handle the power?

Granted I don't know if it's the same unit as the more plebian cars but it's obvious that they CAN do it.

Probably a similar 6MT unit as the base M4 as peak torque remains the same as the base M4 (550Nm) even though it has even more HP than the M4 CSL

In a nutshell, the G87 M2C SHOULD have a MT

[Karmic Man]

Originally Posted by T_U_D

Allegedly it is a totally new transmission for BMW. Given that the production run is limited to 50 units and at the cost of €700,000 per vehicle, the likelihood we will ever see the transmission trickle down into other vehicles is fairly slim, at least not in one that we commoners can afford.

It’s most likely a similar MT as the base M4 and its got the same peak torque as the base M4

MT is torque rated

[zero21]

Originally Posted by Karmic Man

It’s most likely a similar MT as the base M4 and its got the same peak torque as the base M4

MT is torque rated

Exactly. It's the same transmission - 99.9% sure bc it's torque limited to 406lbft. That's not a coincidence.

Also the redline is the same at 7200rpm so I'm guessing we know the limits of the transmission already: 410lbft and 7500-8000rpm.

[Albator_IIII]

Originally Posted by zero21

Exactly. It's the same transmission - 99.9% sure bc it's torque limited to 406lbft. That's not a coincidence.

Also the redline is the same at 7200rpm so I'm guessing we know the limits of the transmission already: 410lbft and 7500-8000rpm.

I would guess the limits are a bit higher. You don't want it that close to normal operating range. This has been engineered by Germans. They typically love to over-engineer stuff.