[Simon H]

Originally Posted by shawnhayes

It is. I'm not sure I buy the "it's the same as the LCI Competition". Everybody who drives it says its different. BMW says its the M8 suspension. I can't say I've driven an LCI Competition and a CS back to back, but the CS is WORLDS different than the base 2018 I had. WORLDS.

Shawn

Shawn,
Its substantially different, and i cant see it being just software adjustments either, it has to be hardware too. I havent been geeky enough to trawl real OEM, for cross checking part numbers etc, i havent even checked with any BMW reps either, i just know how different the car is, and listening to respected journalists reviews on the car, they think so too. Jumping straight from an LCI Comp, into the CS, further highlights the differences.

[Littierally]

Originally Posted by shawnhayes

I still know they're different. May be the same damper, but the spring is different.

"This chassis was adopted to reduce the ride height by around 7 mm. The new Chassis is designed to work with track tires. The suspension system has shock absorbers originally designed for the BMW M8 Gran Coupe. These shocks not only pave the way for a comfortable ride but also reduce tire pressure to improve handling, no matter where you drive. To account for the vehicle’s lower weight and increased tire performance, the front and rear axle bearing springs of the BMW M5 CS have been recalibrated and the damper control has also been revised accordingly."

https://www.hotcars.com/bmw-m5-cs-pe...g-enthusiasts/

Everybody who drives a competition and CS back to back say they're different. I haven't done so, but I knew with that much weight, the springs for the Grand Coupe are WAYY wrong for the CS.

Shawn

https://www.motortrend.com/reviews/2...st-review/amp/

“The 2022 BMW M5 CS gets more than just additional power and revs compared to its "lesser" versions. It features the same chassis and suspension upgrades the M5 Comp boasts over the M5—stiffer engine mounts and suspension springs, 0.2-inch lower ride height, more negative front camber, and a stiffer rear anti-roll bar and toe-link ball-joint mounts. BMW says the M5 CS receives additional "spring and Dynamic Damper Control tuning" compared to the M5 Competition "to take advantage of the lower vehicle weight and of the optionally available (no-cost) Pirelli P Zero Corsa ultra-high-performance tires."

TL;DR: Hardware is the same as LCI M5C, software is different. This is fact, not my opinion. Doesn’t really matter what you guys “think.”

Maybe you can come over this weekend and help me polish my intake and exhaust tips Shawn - they got super dusty after my mall trip yesterday.

[shawnhayes]

Originally Posted by Littierally

TL;DR: Hardware is the same as LCI M5C, software is different. This is fact, not my opinion. Doesn’t really matter what you guys “think.”

Maybe you can come over this weekend and help me polish my intake and exhaust tips Shawn - they got super dusty after my mall trip yesterday.

What the heck do you think "spring tuning" is? You think they talk to it roughly? And a magazine article is not "fact". Until I know the part numbers of the springs and the bump stops, some journalist who can barely spell may not have the "facts".

You can polish your intake and exhaust tips yourself. Unless you're rolling in a pile of money, with your attitude I'm sure it's difficult to get anybody to help you polish anything.

Shawn

[Littierally]

See buddy, I told you that you were going to make yourself mad worrying about all this lowering stuff. It gets complicated!

Anyways, I asked my supermodel girlfriend to polish my intake and exhaust tips. She took her time, and did a damn good job.

[Littierally]

Oh - and that excerpt from MotorTrend above above was quoted directly from a BMW news bulletin on the CS. So yeah, that’s a fact.

https://www.bmwusanews.com/newsrelea...d=3931&mid=415

[Maverik259]

this got weird...quick

[shawnhayes]

Originally Posted by Littierally

Oh - and that excerpt from MotorTrend above above was quoted directly from a BMW news bulletin on the CS. So yeah, that’s a fact.

https://www.bmwusanews.com/newsrelea...d=3931&mid=415

It's your interpretation of that bulletin. Again, these dampers are supposed to be tuned to the CS. That could be a springrate or bumpstop change.

By the by, nobody is impressed by your posturing. Looks weaksauce.

Shawn

[ResIpsaLoquitur]

Originally Posted by Maverik259

this got weird...quick

Some people just can't help themselves.

[Littierally]

Originally Posted by shawnhayes

It's your interpretation of that bulletin. Again, these dampers are supposed to be tuned to the CS. That could be a springrate or bumpstop change.

By the by, nobody is impressed by your posturing. Looks weaksauce.

Shawn

Haha, dude. That is not my interpretation.

By definition, Dynamic Damping Control is BMWs electronic suspension tuning SOFTWARE.

The part numbers are the same for the springs and struts. Call your dealer. I don’t know why you guys are so defensive about this.

[bigfra]

Originally Posted by shawnhayes

Ahem, don't really care if you slam the car. But I do encourage people who haven't been to an HPDE to go. Or at least to the M Performance school, or just something other than polishing the intake and exhaust tips.

And this IS about the CS. No, I don't care who lowered the CS. Doesn't matter. But, awesome car. I enjoy mine. I even enjoy the pics of the lowered ones (well, not slammed, ruins the look, and the ride as well, but lowered and slammed are different).

Shawn

I'm airbagging my CS, fuck it 🤣🤣🤣

[aj_g80]

Originally Posted by Littierally

Haha, dude. That is not my interpretation.

By definition, Dynamic Damping Control is BMWs electronic suspension tuning SOFTWARE.

The part numbers are the same for the springs and struts. Call your dealer. I don’t know why you guys are so defensive about this.

Imagine getting triggered on the internet by someone lowering their car.

[tizzyd]

Alright I have an interesting one. Just bought a CS, BHG/red calipers. Probably the best car I have ever driven. I bought it with 850 miles, finished break in, had service and proceeded to drive it like I stole it. Maybe I’m crazy or have too much mechanical sympathy, but since I’ve driven it harder I’ve noticed a hum at idle that is like a high frequency humming sound that resonates through the steering wheel/brake pedal when stopped. I feel like I’m going crazy - has anyone else noticed this? Goes away above 1k.

Had access to a 2021 M5C and it did not make the same noise. Does the CS have different motor mounts? Less sound deadening?

[Maverik259]

Originally Posted by tizzyd

Alright I have an interesting one. Just bought a CS, BHG/red calipers. Probably the best car I have ever driven. I bought it with 850 miles, finished break in, had service and proceeded to drive it like I stole it. Maybe I’m crazy or have too much mechanical sympathy, but since I’ve driven it harder I’ve noticed a hum at idle that is like a high frequency humming sound that resonates through the steering wheel/brake pedal when stopped. I feel like I’m going crazy - has anyone else noticed this? Goes away above 1k.

Had access to a 2021 M5C and it did not make the same noise. Does the CS have different motor mounts? Less sound deadening?

Same motor mounts. Less sound deadening.

[shawnhayes]

First, CCB after eight track days:

[shawnhayes]

Confirmation that metals can be installed on the front with no modification or going to the blue calipers:

[shawnhayes]

The shoulders on the pirellis are weak for track use:

[shawnhayes]

Proper replacements:

[aj_g80]

Originally Posted by shawnhayes

First, CCB after eight track days:

did you weigh them as well?

[shawnhayes]

Originally Posted by aj_g80

did you weigh them as well?

I wish. I don't have a scale that good.

In my experience, when these are too worn to operate, they vibrate when braking HARD.

I'm going to replace before we ever get there with metal. I'm only at eight track days, and I don't let the pads get below 50%. I just installed my third set. They still look and feel good. We'll see how they do. The M4 guys are getting 20 events (that should be 40 track days) by using this approach.

Shawn

[Used2be]

Originally Posted by shawnhayes

Confirmation that metals can be installed on the front with no modification or going to the blue calipers:

I don't have CCB on mine, but curious. The stock metal rotors and pads swap and you still use the CCB calipers? What's the rotor thickness and diameter difference between steel and CCB? Is the pad and backing plate thickness the same for both? Be interesting to see if the pedal feel is the same when you go to steel. There is some difference in the master cylinders too, I think? The money you save on pads will cover the cost of the track time!

[shawnhayes]

Originally Posted by Used2be

I don't have CCB on mine, but curious. The stock metal rotors and pads swap and you still use the CCB calipers? What's the rotor thickness and diameter difference between steel and CCB? Is the pad and backing plate thickness the same for both? Be interesting to see if the pedal feel is the same when you go to steel. There is some difference in the master cylinders too, I think? The money you save on pads will cover the cost of the track time!

The difference was a couple of mm. The diameter of the carbons was 5mm greater of the carbon ceramics, and about 2mm thicker. The question was the centering in the caliper pocket and whether the pads would overhang the edge of the rotor. It does not.

Shawn

[clutchdj]

GTS guys are doing the same; switching to irons. Seems to be the best solution. Very cost effective especially if over 5 track days/yr. Was just having this conversation w/someone today. Ceramics are for the street. Irons for the track. What pads are you running? Thanks for sharing.