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      04-17-2015, 10:37 AM   #1
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Rumor: M4 CSL moniker returning (not M4 GTS)? Not likely.

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Rumor: M4 CSL moniker returning (not GTS)?
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The anticipated and already spied lightweight and more powerful special M4 model will return the "CSL" name, instead of the "GTS" name given to the previous generation M3 coupe, claims Automobile in their M4 Safety Car ride-along review.

While a return of the CSL moniker would be cool, the issue with this claim is that the "M4 GTS" name has already been seen on official BMW documents -- see: http://www.2addicts.com/forums/showthread.php?t=1106499 (image below). Of course the name could always change before its official announcement and reveal, but if BMW refers to it as the M4 GTS already, we'd bet on that name sticking.

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Officially, the representatives of BMW AG tell us that they’ve never heard of the 2016 BMW M4 GTS. This might even be true, since we hear that the M branch is considering changing the badge from “GTS,” an acronym also used by AMG and Porsche. Instead we’re likely to see the return of the “CSL” moniker, a model name created in the early 1970s for the legendary BMW 3.0 CSL “Batmobile” and which briefly returned for a special-edition 2003 BMW M3.

“CSL” stands for coupe sport lightweight, which is a pretty accurate description of this 2015 BMW M4 outfitted for MotoGP duty. After all, the M Division intends to take away up to 220 pounds of weight for next year’s high-performance M4. The means to this end include a hood, doors, and a trunklid made of aluminum, manually adjustable carbon-fiber front seats (and no more rear seat), and a less comprehensive specification for comfort features. The rollcage will be an optional extra, but all the exterior aero addenda featured on the MotoGP pace car is likely to be carried over. These are part of the M Performance aero kit, boasting a front splitter and fender blades, rocker-sill extensions, slippery outside mirrors, a smoother underbody cover, a rear aero diffuser, and a size-XXL tail rudder.

The water-injection technology is expected to add about 22 pounds to the car thanks to the requisite plumbing and a separate water tank. In a perfect world, the tank that collects condensation from the air-conditioning unit would be used as a source of water, but packaging complications mean that this approach probably won’t be used until the appearance of the refreshed 2018 BMW M4. Meanwhile, the MotoGP car’s water tank is located in the trunk.

Water injection works its miracle in the M4’s twin-turbo engine simply by cooling combustion temperature, which in turn improves the engine’s ability to resist pre-ignition, or “knock.” The result is a claimed improvement of horsepower and torque by up to 8 percent, plus a reduction in nitrogen-oxide air emissions.

http://www.automobilemag.com/reviews...ty-car-review/

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      04-17-2015, 10:42 AM   #2
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      04-17-2015, 11:24 AM   #3
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Either one would be out of my price ranger I'm sure.
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      04-17-2015, 11:25 AM   #4
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This is really getting interesting now. Anyway, a 220lb weight saving coupled with an 8% increase in power and torque should mean that the CSL/GTS edition will be a blast to drive on the track.
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      04-17-2015, 11:26 AM   #5
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I want .....
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      04-17-2015, 11:27 AM   #6
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CSL please and only in silbergrau
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      04-17-2015, 11:38 AM   #7
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Haha, they have never heard of a M4 GTS? They hear everything that is chatted on these forums
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      04-17-2015, 11:44 AM   #8
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Quote:
Originally Posted by s3baman View Post
This is really getting interesting now. Anyway, a 220lb weight saving coupled with an 8% increase in power and torque should mean that the CSL/GTS edition will be a blast to drive on the track.
Wont be a 220 lb weight different. They couldnt even take that off the E92 and the e92 was a bit heavier than the f8x. Would think more along the lines of 100-150 lbs.
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      04-17-2015, 12:09 PM   #9
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Quote:
Originally Posted by Revcrazy View Post
Wont be a 220 lb weight different. They couldnt even take that off the E92 and the e92 was a bit heavier than the f8x. Would think more along the lines of 100-150 lbs.
Agreed, there is no way they are shaving 220 pounds unless it's actually a race-prepped version with no backseat, no a/c, etc.

They spent GOBS of money dropping weight on the f8x and managed 100-120 pounds on average. (seats, CF driveshaft, lithium battery) There's no way there's another 200 pounds sitting around just waiting for more lightweight application to readily fall off.
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      04-17-2015, 12:20 PM   #10
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it doesn't matter what they call it as long as its going to get made lol! I personally think CSL would be cool because of the history
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      04-17-2015, 12:20 PM   #11
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They've managed to lose ca. 150 lbs with the E92 GTS, there's no way they can do more.
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      04-17-2015, 12:21 PM   #12
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Quote:
Originally Posted by JoeFromPA View Post
Agreed, there is no way they are shaving 220 pounds unless it's actually a race-prepped version with no backseat, no a/c, etc.

They spent GOBS of money dropping weight on the f8x and managed 100-120 pounds on average. (seats, CF driveshaft, lithium battery) There's no way there's another 200 pounds sitting around just waiting for more lightweight application to readily fall off.
I'm pretty sure the backseat is removed and that there will be paper thin CF seats in the front. 220 is still a tall order but Scott26 has dropped hints from the beginning that the GTS will utilize more CF in the chassis as a result of work being done on the "i" cars. I'm not ready to say "no way". At the hinted $140k price tag there are room for some pretty drastic upgrades in light weight solutions.
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      04-17-2015, 12:25 PM   #13
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Originally Posted by sirantsE90
CSL please and only in silbergrau
I'd kill myself
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      04-17-2015, 12:48 PM   #14
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Quote:
Originally Posted by solstice View Post
I'm pretty sure the backseat is removed and that there will be paper thin CF seats in the front. 220 is still a tall order but Scott26 has dropped hints from the beginning that the GTS will utilize more CF in the chassis as a result of work being done on the "i" cars. I'm not ready to say "no way". At the hinted $140k price tag there are room for some pretty drastic upgrades in light weight solutions.
Yes, let me re-state - if it's in some way a race-prepped (or practically so) car, they can shave 220 pounds by stripping content/functionality.

I don't believe they can do it using lightweight materials alone, even at $140k. I'd be happy to be proven wrong.
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      04-17-2015, 01:00 PM   #15
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Quote:
Originally Posted by JoeFromPA View Post
Agreed, there is no way they are shaving 220 pounds unless it's actually a race-prepped version with no backseat, no a/c, etc.

They spent GOBS of money dropping weight on the f8x and managed 100-120 pounds on average. (seats, CF driveshaft, lithium battery) There's no way there's another 200 pounds sitting around just waiting for more lightweight application to readily fall off.
I don't think it's completely out of the question.
Lighter exhaust (Akra maybe?) will be a decent amount of weight
The regular seats usually weigh a ton still I'm sure
No rear seat

I wouldn't be surprised if that alone is not 80 lbs or so. Then you add things like Nav/AC delete, aluminum panels, more CF....

Hell for that kind of money, that's what I would expect them to do.

P.S. I like the CSL naming better than the GTS
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Last edited by W///; 04-17-2015 at 01:18 PM..
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      04-17-2015, 01:26 PM   #16
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Would be awesome to see the CSL moniker back! It just fits so much better to any BMW Sport Coupe than 'GTS'.
Maybe the M4 CSL will get water-injection like the safety car as well...
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      04-17-2015, 01:27 PM   #17
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For ghat price tag I would get a Porsche GT3
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      04-17-2015, 01:42 PM   #18
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Quote:
Originally Posted by mshab356
For ghat price tag I would get a Porsche GT3
Fair point
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      04-17-2015, 02:32 PM   #19
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Originally Posted by clbmw View Post
Fair point
I was just going to post this. Definitely a no-brainer to go for the gt3 over this at a similar price point.
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      04-17-2015, 02:40 PM   #20
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My guess is GTS for the USA and CSL for the ROW
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      04-17-2015, 02:41 PM   #21
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Quote:
Originally Posted by W/// View Post
I don't think it's completely out of the question.
Lighter exhaust (Akra maybe?) will be a decent amount of weight
The regular seats usually weigh a ton still I'm sure
No rear seat

I wouldn't be surprised if that alone is not 80 lbs or so. Then you add things like Nav/AC delete, aluminum panels, more CF....

Hell for that kind of money, that's what I would expect them to do.

P.S. I like the CSL naming better than the GTS
Very lightweight aftermarket seats barely weigh 2-4 pounds less than the stock front seats (they are extremely light stock, and remember they need to meet safety requirements). A titanium exhaust, meeting the same emissions and sound requirements, might drop 30 pounds based upon what we've seen from Akra and BMW.

After that, yes, you can strip content like nav/ac/sound system/backseat/carpeting and get lighter.

My point was not that 80-100 pounds couldn't be removed with alot of money and effort. My point was 220 pounds can't be removed without stripping content while meeting safety and emissions requirements.

I would LOVE to be proven wrong on that but take a look the efforts undertaken by Porsche, Corvette, and others at stripping weight out of their already lightweight models.
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      04-17-2015, 02:55 PM   #22
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I certainly hope it does not retail for $140k. That would be ridiculous.

Lets see when BMW gets the point, instead of foolishness like 'exclusivity' they should mass produce a $100k car that performs like a GT3 and have it available during the entire run of M3s.

Of course when you make 50 units the price is stupid, then everyone will hate on it because it's too damn expensive and costs more than a GT3...
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