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SLC General Discussion SLC 180,200,300,250d,43 AMG

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#1 Old 07-01-2019
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Disappointed

I bought an SLC43 a few months ago and have to say I'm very disappointed with it. I thought the ride on it would be much more flexible than the Nissan GTR that I'm currently selling. But it isn't. The difference between comfort, sport and sport+ is the noise coming out the back. The ride is terrible, bouncing over every bump and undulation in the road makes it a very unenjoyable battle to try to drive enthusiastically. I have asked at the Mercedes dealer and also at a specialist about this and they just shrug and say they don't know, pointing to the large wheels and low profile tyres.
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#2 Old 07-01-2019
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Low profile tyres mean that they give very little so will give a harsh ride.

Presumably, you did not test drive the car before purchase or if you did then the test was not long enough and/or over different types of road.

Were different spring rates and shocks available for the SLC?
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#3 Old 07-01-2019
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Sorry to here that Your SLC43 is not that good on our British roads...
During our Euro Road Trip this year, We found our SLC43 great on the European roads as they are re-surfaced on a regular bases, un-like here in the UK

I find it comparable in comfort to My old 2010 SLK/350 with Sports Suspension & 50k miles.

So how many miles has Your SLC43 done & what tyres are on the car?

Quote:
Originally Posted by Redleader View Post
Were different spring rates and shocks available for the SLC?
For an extra 1k You could specify "AMG Ride Control" (Which this car may have, hence the hard ride?)
So the "Dynamic Select" button would also change the suspension settings, apart from the regular Steering weight, and throttle response on cars with out "AMG ride Control"
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#4 Old 07-01-2019
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Quote:
Originally Posted by hedgehog View Post
The ride is terrible, bouncing over every bump and undulation in the road makes it a very unenjoyable battle to try to drive enthusiastically. I have asked at the Mercedes dealer and also at a specialist about this and they just shrug and say they don't know, pointing to the large wheels and low profile tyres.

Quote:
Originally Posted by Trev5 View Post
So how many miles has Your SLC43 done & what tyres are on the car?

For an extra 1k You could specify "AMG Ride Control" (Which this car may have, hence the hard ride?)
So the "Dynamic Select" button would also change the suspension settings, apart from the regular Steering weight, and throttle response on cars with out "AMG ride Control"
@hedgehog, I see you have not asked for your free data card. That might provide some insights into your concerns

Find it here
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#5 Old 07-02-2019
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Thanks for the replies above. To respond as best I can, I did go for a test ride and it seemed ok ish at the time. Perhaps the owner picked smoother roads where he lived.


Tyres are Continental rear 255 x 35 x18, fronts 235 x 40 x18 and mileage is 24k.



Another strange thing the car does is not move when put into gear or at least not until you gently stab the throttle. My wife almost crashed into the driveway gate yesterday. I manage to get around it by keeping my left foot on the brake and giving it a bit of gentle throttle until it breaks loose. Is this normal? Seems like it might be a function of the electric handbrake.


Finally I think I've done all the stuff for a data card but can't find it.
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#6 Old 07-02-2019
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Quote:
Originally Posted by hedgehog View Post
Thanks for the replies above. To respond as best I can, I did go for a test ride and it seemed ok ish at the time. Perhaps the owner picked smoother roads where he lived.


Tyres are Continental rear 255 x 35 x18, fronts 235 x 40 x18 and mileage is 24k.



Another strange thing the car does is not move when put into gear or at least not until you gently stab the throttle. My wife almost crashed into the driveway gate yesterday. I manage to get around it by keeping my left foot on the brake and giving it a bit of gentle throttle until it breaks loose. Is this normal? Seems like it might be a function of the electric handbrake.


Finally I think I've done all the stuff for a data card but can't find it.
i don't see your datacard request in the request datacard section here:

https://www.slkworld.com/vehicle-data-card/


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#7 Old 07-02-2019
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Quote:
Originally Posted by hedgehog View Post
Thanks for the replies above. To respond as best I can, I did go for a test ride and it seemed ok ish at the time. Perhaps the owner picked smoother roads where he lived.


Tyres are Continental rear 255 x 35 x18, fronts 235 x 40 x18 and mileage is 24k.



Another strange thing the car does is not move when put into gear or at least not until you gently stab the throttle. My wife almost crashed into the driveway gate yesterday. I manage to get around it by keeping my left foot on the brake and giving it a bit of gentle throttle until it breaks loose. Is this normal? Seems like it might be a function of the electric handbrake.


Finally I think I've done all the stuff for a data card but can't find it.

Find the thread that tells you how to reset the throttle response. It will have learned from the previous owner and doing this to my SLK55 made it a completely different car.


Aaah, I have a copy in a text file on my desktop:


With the engine off, turn the key to position 2 (don't start it.)
Press the throttle pedal all the way to the floor past the kick down click.
Hold it down for about 30 seconds.
Take your foot off the pedal and take the key out.
Wait 5 seconds, and start the car.
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#8 Old 07-02-2019
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i believe fronts should be 225 not 235...what does the door placard say?
255 is also not standard for the rear


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#9 Old 07-02-2019
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Quote:
Originally Posted by hedgehog View Post

Another strange thing the car does is not move when put into gear or at least not until you gently stab the throttle. My wife almost crashed into the driveway gate yesterday. I manage to get around it by keeping my left foot on the brake and giving it a bit of gentle throttle until it breaks loose. Is this normal? Seems like it might be a function of the electric handbrake.

Can I ask a really dumb question, for which I apologise. Just trying to rule out possible causes. Have you actually taken the handbrake off when you say about the car not rolling on when first put into gear?

Another possible reason is if the car is parked with wet brake disks - the pads under the handbrake tend to stick to the disks.

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Quote:
Originally Posted by Welshdrive View Post
Can I ask a really dumb question, for which I apologise. Just trying to rule out possible causes. Have you actually taken the handbrake off when you say about the car not rolling on when first put into gear?

Another possible reason is if the car is parked with wet brake disks - the pads under the handbrake tend to stick to the disks.

M
Just guessing here but as it's a '16, brake release is either automatic (releases when in drive) or pull-the-handle under the dash for electric brake release (not like a release between the seats that's a bar where you push the button in and lower it).

It appears he has not asked for his free data card so I can't be sure of the specs (or its even listed as a line item--might be part of a package so not shown separately).

Get it HERE


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#11 Old 07-02-2019
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Quote:
Originally Posted by jbanks15 View Post
i believe fronts should be 225 not 235...what does the door placard say?
255 is also not standard for the rear
235 is correct for R172 55 and SLC43 Jeff!
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Quote:
Originally Posted by Col View Post
235 is correct for R172 55 and SLC43 Jeff!
Thanks Col...just spouting
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#13 Old 07-02-2019
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Quote:
Originally Posted by hedgehog View Post
Tyres are Continental rear 255 x 35 x18, fronts 235 x 40 x18 and mileage is 24k.
They are the same size tyres that are on My 2018 SLC43, with ContiSportContact Tyres - Do You have the AMG 10 spoke as per picture below or the optional multi-spoke design? (Not that it should make any differenc)


Quote:
Originally Posted by hedgehog View Post
Another strange thing the car does is not move when put into gear or at least not until you gently stab the throttle. My wife almost crashed into the driveway gate yesterday. I manage to get around it by keeping my left foot on the brake and giving it a bit of gentle throttle until it breaks loose. Is this normal? Seems like it might be a function of the electric handbrake..
Coming from a manual V6 engine with a nice hydraulic clutch, I find all auto's difficult to manoeuvre at very slow speed, especially over the garage door lip (well I did till I took the grinding disk to it..!!) Using left foot braking at low speed is a good skill to have.

With the new SLC 9 speed auto box, all I do is select "D" and press the accelerator to go - No need to release the electric parking brake..!! I do find the new 9G box in the SLC different in operation to the 7G box in My old R171/350 SLK - Has taken a time to get use to how it works to get the most out of it.

Going back to Your original comment about asking a dealer about the ride, as there are less than 500 x SLC 43's in the UK, it's difficult for them to be an expert on them...
If You ever make it over to the M3 or M4 - West side of London, I'd be more than happy to meet up to see how the two SLC43's compare.. If there was a difference/problem, You could then go back to the dealer, especially if any of the 3 years warranty is left?
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#14 Old 07-05-2019
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I recently replaced the original tires on my 2017 SLC43. The originals were Conti Sport Contact 5P, had about 9500 miles on them, and gave a very rough ride. I replaced them with Michelin Pilot Sport A/S 3 Plus. Ride is now much smoother and handling is very good.
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#15 Old 07-15-2019
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"Another strange thing the car does is not move when put into gear or at least not until you gently stab the throttle"



Yes, electric brake gets activated when you park (on a slight slope). You will see the sign light up on the dash. Use the brake release to disengage it. Simple.
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#16 Old 07-16-2019
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Quote:
Originally Posted by Wick63 View Post
I recently replaced the original tires on my 2017 SLC43. The originals were Conti Sport Contact 5P, had about 9500 miles on them, and gave a very rough ride. I replaced them with Michelin Pilot Sport A/S 3 Plus. Ride is now much smoother and handling is very good.
Dear Wick63,

Sorry to hijack the thread, but:

Did you get tyre skip with your original tyres (An unholy clunk, clunk, clunk when on full turn going at low speed in forward or reverse, such as manoeuvring into a parking space, usually in colder weather)
I have the Conti Sport 5P on my factory new car.

If so, do your new tyres still do it? It might be too warm to tell at the moment though!
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#17 Old 07-16-2019
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Quote:
Originally Posted by Trev5 View Post
For an extra 1k You could specify "AMG Ride Control" (Which this car may have, hence the hard ride?)
So the "Dynamic Select" button would also change the suspension settings, apart from the regular Steering weight, and throttle response on cars with out "AMG ride Control"

Back on track with this post of mine, actually I find the AMG Ride Control to be softer than the standard sports suspension and I am glad I spent the 995 on it.

It depends on the setting however, but I usually have it in Comfort setting for the suspension. I don't do track racing.

(My Individual preset for the Dynamic Select is Sports+ for engine, comfort for suspension and sports for steering)

If I want to tone the engine/exhaust sounds down I drive in the regular Sports mode at a push as that way at least I get to pull off in 1st gear and the Stop/Start is always off.
(I do have a SmartTop to disable it at start-up but if you cycle through Dynamic Select it reenables the awful (and sometimes dangerous) Start/Stop).
The engine and gear changes also retain a sports car feel in Sports Mode, (although it feels more like my '06 SLK350 when in Sports mode than the '19 AMG 43 it is as some neutering is involved)

I find Comfort is like driving a regular saloon. You pull off in second gear and the revs and gear changes are just neutered and it has no sports car feel to it)
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#18 Old 07-16-2019
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Yes, my original Conti tires did skip and make the clunking sound especially the front tires when turning while backing up. The Contis skipped until the tires warmed up. Low temperature made it worse. The new Michelins do not skip or make the clunking sound in any conditions experienced so far. I had the Michelins installed in May.
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