M3/M4 CS Owners Thread

khanmohammed · 05-07-2023, 11:29 PM

Quote:

Originally Posted by csboi

All CS/GTS are like this. Valves close after startup roar, and then reopen after warmup cycle.

Ah makes sense, basically the “GTS Roar” option you get in BM3 but from the factory. Is there a way to start the car with the valves fully open and not close at all

XnogarD · 05-08-2023, 12:00 AM

Quote:

Originally Posted by khanmohammed

Ah makes sense, basically the “GTS Roar” option you get in BM3 but from the factory. Is there a way to start the car with the valves fully open and not close at all

After driving in Sport+, park and unplug the exhaust valve solenoid. It will stay open. There will be an invisible code of none responsive exhaust valves but thats about it.

jdhiro · 05-08-2023, 11:18 PM

Quote:

Originally Posted by BSM_CS

Cheapest genuine BMW part so far

https://www.schmiedmann.com/en/produ...1-11-8-076-049

Is there a 3rd party part that actually uses the OEM chassis bracing anywhere? Just split my lip so I'm looking at options...

CSBM5 · 05-09-2023, 07:53 AM

Quote:

Originally Posted by jdhiro

Is there a 3rd party part that actually uses the OEM chassis bracing anywhere? Just split my lip so I'm looking at options...

I think this is about the cheapest you'll find from BMW dealer online parts sites. I've bought a number of parts from them with quick and accurate order shipping.

https://www.bmwpartsworldwide.com/oe...90-51118076049

santiwan · 05-09-2023, 05:43 PM

Are you guys putting on the CF driver/passenger mirror covers or keeping the stock ones on your CS vehicles?

Thinking of putting the CF ones but I feel like the paint matched ones are better since the CS colors are more special, in a sense?

THEROK · 05-09-2023, 06:51 PM

Quote:

Originally Posted by santiwan

Are you guys putting on the CF driver/passenger mirror covers or keeping the stock ones on your CS vehicles?

Thinking of putting the CF ones but I feel like the paint matched ones are better since the CS colors are more special, in a sense?

Special is as special does. I immediately swapped out with OEM CF mirror caps. Stupid money, but easy to resell so long as genuine.

THEROK · 05-09-2023, 06:54 PM

Quote:

Originally Posted by Isaac.

Just wanted to share in case others were thinking of going the same route. I replaced my original PSS yesterday with the star-marked G8X PS4S. Of course, the rears are the same size but the fronts at 275 vs 255 with the same aspect ratio look a bit tall visually. I’m sure I’ll get used to it but wanted to share. Thankfully that extra sidewall height doesn’t mean decreased response. All the internal and compound improvements mean the performance is definitely there with sharp turn-in and enthusiastic response to inputs. (FYI car is all stock, no MP-HAS.)

These tires may as well be cup tires. It's got double the number of special sticky Michelin magic compounds compared to your off the shelf PS4S so it's more like a PS4S Cup. BMW M wasn't messing around along the rubber front.

Nice work.

NickyC · 05-09-2023, 07:10 PM

Quote:

Originally Posted by santiwan

Are you guys putting on the CF driver/passenger mirror covers or keeping the stock ones on your CS vehicles?

Thinking of putting the CF ones but I feel like the paint matched ones are better since the CS colors are more special, in a sense?

I only do it if it's a boring color like black. No way I'd trade out painted FDB2 mirrors to drab carbon ones. The more color the better.

santiwan · 05-09-2023, 09:51 PM

One more question, lol. Are you guys swapping out the top mount intercooler? I had it leak on my 2016 base before around 32k miles, and wasn't sure if people are seeing the same issues on the CS models. Part doesn't seem like its been changed so not sure if I should consider upgrading the stock one.

jdhiro · 05-10-2023, 01:21 AM

Quote:

Originally Posted by santiwan

Are you guys putting on the CF driver/passenger mirror covers or keeping the stock ones on your CS vehicles?

Thinking of putting the CF ones but I feel like the paint matched ones are better since the CS colors are more special, in a sense?

Mine was optioned with CF mirror caps (and M Perf side decals) out of the gate. I think they are a nice touch and I wouldn't have it another way.

JStang · 05-10-2023, 09:44 AM

Quote:

Originally Posted by NightriderCS

Want I meant is not PPF..This

https://www.drbeasleys.com/matte-paint-coating.html

or better

https://gyeonquartzusa.com/product/matte-evo/

I had someone do ceramic coating on mine and made a positive difference. Matte paint you will find attracts dust and just sits on the car very easily. Ceramic coating helps brush it off or even when driving off just comes off easily. Also, makes cleaning easier. Most have 3 year protection once applied.

+1 on ceramic coating. Get the wheels done too. FDB is the worse car I've ever owned at hiding dirt especially after rain. Give it a quick pressure wash with ceramic coating and the dirt is essentially gone and the brake dust just washes away.

JStang · 05-10-2023, 09:45 AM

Quote:

Originally Posted by Isaac.

Just wanted to share in case others were thinking of going the same route. I replaced my original PSS yesterday with the star-marked G8X PS4S. Of course, the rears are the same size but the fronts at 275 vs 255 with the same aspect ratio look a bit tall visually. I’m sure I’ll get used to it but wanted to share. Thankfully that extra sidewall height doesn’t mean decreased response. All the internal and compound improvements mean the performance is definitely there with sharp turn-in and enthusiastic response to inputs. (FYI car is all stock, no MP-HAS.)

Was thinking that the sidewall looked thick before I even read your post. Interesting.

DaiLyCS · 05-12-2023, 12:13 AM

Quote:

Originally Posted by santiwan

Are you guys putting on the CF driver/passenger mirror covers or keeping the stock ones on your CS vehicles?

Thinking of putting the CF ones but I feel like the paint matched ones are better since the CS colors are more special, in a sense?

Both loook nice, can’t go wrong with either one. F80/f82 got the best looking side mirrors of any car. But I prefer mine color matched

csboi · 05-14-2023, 01:37 PM

Quote:

Originally Posted by jdhiro

Mine was optioned with CF mirror caps (and M Perf side decals) out of the gate. I think they are a nice touch and I wouldn't have it another way.

Same here, interestingly, CF mirror caps (dealer) optioned on mine, but I am on the hunt for factory LRG caps just to have on the shelf.

NickyC · 05-14-2023, 07:34 PM

I'm out of ideas, need to either be content with the final product or start thinking of something new to do with it. I think anything else however would be tacky/trying too hard. These cars are just setup so well as is.

spidy512 · 05-14-2023, 08:56 PM

Quote:

Originally Posted by NickyC

I'm out of ideas, need to either be content with the final product or start thinking of something new to do with it. I think anything else however would be tacky/trying too hard. These cars are just setup so well as is.

Hmm.

Second set of wheels, preferrably BBS LMR in 20", black barrel, diamond silver face.

Just sayin'...

josh

NickyC · 05-14-2023, 09:04 PM

Quote:

Originally Posted by spidy512

Hmm.

Second set of wheels, preferrably BBS LMR in 20", black barrel, diamond silver face.

Just sayin'...

josh

Normally wheels are one of the first things I change on a car, but the 763m wheels are just perfect to me. Thanks for the help though!

jdhiro · 05-15-2023, 01:16 AM

Quote:

Originally Posted by NickyC

Normally wheels are one of the first things I change on a car, but the 763m wheels are just perfect to me. Thanks for the help though!

+1. Are those M Perf side skirts on your car?

swagon · 05-15-2023, 01:31 AM

Quote:

Originally Posted by NickyC

I'm out of ideas, need to either be content with the final product or start thinking of something new to do with it. I think anything else however would be tacky/trying too hard. These cars are just setup so well as is.

You should be content with what you've got because you are satisfied with it.

Enjoy it for what it is rather than what it could potentionally be.

NickyC · 05-15-2023, 08:31 AM

Quote:

Originally Posted by jdhiro

+1. Are those M Perf side skirts on your car?

Thanks! Nope, they’re the Vorsteiner side blades to match the diffusor.

khanmohammed · 05-15-2023, 04:30 PM

Hey guys I’m taking my 19’ m4cs to the track soon for a HPDE. It’ll be my first time, so what are the main things I should bring with me to the track.

Also going to be putting trackarmour on the front bumper and other panels to prevent rocks from destroying my paint.

My car is at 13k miles now and the brake fluid hasn’t been changed as far as I know, I just got oil changed at 12.1k miles last month. Tires are PSS with good tread on them.

Should I get the brake fluid changed? Should I use a different fluid if so

The stock pads aren’t gonna be toasted after one HPDE right?

swagon · 05-15-2023, 04:51 PM

Do brake fluid for sure. Motul RBF or Castrol SRF.

Pads are just a good cheap safety item... and my Ferodo DS1.11 were cheaper and better than OE pads from the dealer. So if you get those or similar pads, then you could then swap them for the original pads for daily use. It's a very easy job anyway.

You don't need to do anything else really at this point.

Regardless of track days, no fluid in the car lasts a century despite the car being low-mileage.

05-09-2023, 05:43 PM	#555
santiwan Private First Class 180 Rep 139 Posts Drives: M4 Join Date: Nov 2018 Location: SoCal IE iTrader: (1)	Are you guys putting on the CF driver/passenger mirror covers or keeping the stock ones on your CS vehicles? Thinking of putting the CF ones but I feel like the paint matched ones are better since the CS colors are more special, in a sense?
	Appreciate 1 DaiLyCS166.50 Quote

05-09-2023, 09:51 PM	#559
santiwan Private First Class 180 Rep 139 Posts Drives: M4 Join Date: Nov 2018 Location: SoCal IE iTrader: (1)	One more question, lol. Are you guys swapping out the top mount intercooler? I had it leak on my 2016 base before around 32k miles, and wasn't sure if people are seeing the same issues on the CS models. Part doesn't seem like its been changed so not sure if I should consider upgrading the stock one.
	Appreciate 0 Quote

05-14-2023, 07:34 PM	#565
NickyC Lieutenant General 17485 Rep 10,663 Posts Drives: M4 CS. Former G82, x2 F82, F80 Join Date: Nov 2010 Location: Jacked out of my mind iTrader: (23)	I'm out of ideas, need to either be content with the final product or start thinking of something new to do with it. I think anything else however would be tacky/trying too hard. These cars are just setup so well as is. Attached Images Last edited by NickyC; 05-14-2023 at 07:41 PM..
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05-15-2023, 04:30 PM	#571
khanmohammed First Lieutenant 149 Rep 375 Posts Drives: BMW M4 CS Join Date: Oct 2019 Location: IL iTrader: (0)	Hey guys I’m taking my 19’ m4cs to the track soon for a HPDE. It’ll be my first time, so what are the main things I should bring with me to the track. Also going to be putting trackarmour on the front bumper and other panels to prevent rocks from destroying my paint. My car is at 13k miles now and the brake fluid hasn’t been changed as far as I know, I just got oil changed at 12.1k miles last month. Tires are PSS with good tread on them. Should I get the brake fluid changed? Should I use a different fluid if so The stock pads aren’t gonna be toasted after one HPDE right?
	Appreciate 0 Quote

05-15-2023, 04:51 PM	#572
swagon Major General 13523 Rep 8,165 Posts Drives: F80 6MT Join Date: Jun 2013 Location: . iTrader: (0)	Do brake fluid for sure. Motul RBF or Castrol SRF. Pads are just a good cheap safety item... and my Ferodo DS1.11 were cheaper and better than OE pads from the dealer. So if you get those or similar pads, then you could then swap them for the original pads for daily use. It's a very easy job anyway. You don't need to do anything else really at this point. Regardless of track days, no fluid in the car lasts a century despite the car being low-mileage. __________________
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