SebringSilver

It might actually be a problem with the suspension, in particular the rear suspension. I've often felt that there was something amiss with the rear suspension geometry.

white_beast

Well how can I fix that now I'm worried!! I'm a suppose
to take the service advisor for a
top speed rumso that he understands lol!!

SebringSilver

I don't think there's anything to fix, per se. I was only pointing out that the rear suspension seemed a bit "loose" at speed in wet weather conditions. It could be my tires that amplified that effect as well. I was not implying that there was a real sense of danger. Good luck with your service appointment.

azlane

I'm not sure if it is the same thing that you experienced at high speed, but I can say that of the 4 times that I have been 130+, one of those times I got a "floating" feeling that felt a little side to side. It caused me to take my foot off as it was a bit unsettling.

Since it only happened one time, I attributed it to either an uneven road, or the tail wind that I had that may have varied a bit from side to side.

harrower

Just drove my car on A3 autobahn north of Frankfurt and had it at 187mph (299kph) and she was as stable as a rock. Car is all stock except for modified ECU which gives me according to dyno 60+bhp over stock. She had more in her but ran into traffic and it was late at night with fog so had to back off.

harrower

sorry...forgot to add that I have performance package with delimited to 174mph (which I consider stock) which of course is all marketing..

maximooz

Oh my, I almost crapped myself 8 different times as I read through all 8 pages of this thread.

The Dan guy reminds of me a friend of mine who is a civil engineer and drives a modified G35. For the life of him, he couldn't wrap his head around why a stock 335i making just "300hp" would beat him so easily. Seriously, what is it about engineers always wanting to be "right" about anything related to physics?

Long story short, my opinion -- and I'm glad to share this same sentiment with most of you -- is that the C63's factory chassis can handle 200mph. It may require 1 mile, it may require more.

Having spoken to the senior editor over at Motor Trend (Ed Loh) who advised me and my gf against getting a C-class, he admitted that his fellow MT editors believe the C63 can sustain 200mph.

Thanks for making my humpday interesting, everyone. I enjoyed everyone's response to some of the atrocious remarks made by that dan guy.

Stay safe out there. And those of you exceeding 120+, please do it on a track. Or at the very least, get the heck away from me

superlubricity

The Lorinser C LV8 (a 500-hp Mercedes-Benz C63 AMG) reached 194.6 mph in last year's Nardo High-Performance Event.

Article here -> http://www.motortrend.com/features/p...t/results.html

miami1lt

I asked Cory from Kleemann about hitting 185 with the K1 upgrade...he said "find a road long enough and I'm sure you will climb north of 185".

The guy tunes this particular car for a living...I'm taking his word for it.

Dads C63

This has been an interesting thread to follow at the least. However, the AMG "C" platform is a great platform and do NOT under estimate it.

dan30252 - I am not sure if you are an engineer or not but stop talking about the stability of the chassis until you drive it at high speeds, have an engineering degree, and have worked at AMG. The guys at AMG know what they are doing. When the factory optional speed delimiter is 174 its stable at speeds above that.

This car will run 200mph+ (don't ask me how I know) and its capable and stable. Up to 160 you can drive it like you do at 90. From 160 - 180 you should use both hands. Above 180 it requires your undivided attention but when you are driving that speed in any car you better be paying attention.

This is my favorite car and I've owned a bunch. The best part about this car is that it can go to the 1/4 mile drag strip and run mid 11's, then on the way home run 200mph with the exact same suspension and tires, then load it on the trailer and go to Roebling Road with some suspension adjustments and tire change and stay with best of the guys there. Its the best OVERALL car I've ever owned. In between all this racing you can drive it to work every day and take the wife out to dinner in it. All for less than a total investment of $90,000. Name me any another N/A car that will do all these things and do it in a four door luxury sport sedan. Thats the best part about owning the C63 in my opinion.

SebringSilver

Very...no, make that extremely well said.

miami1lt

Anybody else think that Dan is the "John Kerry" of this thread? Way to flip-flop man! You've come a long way since the beginning!

From an engineering perspective, this car stock will easily handle 180-190...and perhaps higher (based on wind, humidity, temperature, etc.). Otherwise, the factory wouldn't have to electronically limit it to 174mph.

An S2K on the other hand?!? They had trouble getting 150mph out of a highly tuned SPOON version of that!

AMGC60-3

A big plus one, well said.

avengerboater

I heart Dad's last post!

mthis

+1 well said.

C63newdude

Dan30252,

Please give me your definition of supercar. I guess that a Rolls Royce is a bulky sedan car and does not follow the "supercar" category because it can't reach 200mph? same thing with a M-5? or a bentley? or a CTS-V?
Your supercar definition is very subjective. The C63 AMG is built from factory to really do 180+ mph, I don't know why you mentioned before that it "would fall apart".
The C63 AMG can do 300 km/h no matter how you look at it, it is heavy because is loaded but even being bulky(not too aerodynamic) it still will do 300KM/H with the limiter removed, that is remarkable.

gravedgr

Now I know you're full of ****. Unless Lamborghini of Atlanta is open at 3 am on a Sunday (and you blew through the tollbooth at 150 too), you're lying out your ***.

djcevo

I have had 192 mph and there was a little more to go! I have exceeded 180 many times and it was with relative ease. I have noticed though that everytime I go over 165 the sunroof has quite a lot of wind noise - anyone else have this???

jafores

Had my car's ECU flashed using upsolute. Dyno showed only a modest 10 RWHP but managed this. Took several pictures driving the car with one hand and the camera in the other. car was very stable otherwise i wouldnt have tried this by myself. pictures taken 16 hours ago.

AMGC60-3

And you were only just over 6k on the tach.

AMGC43C55

jafores

Could this have been caused by cross winds? when I did my run on the post above, car felt like it was running at 120! although the highway where this was done is practically brand new and almost empty on a sunday morning, car felt very stable. Also did this same thing on my ML and the E50 (when I still had it) although those 2 cars were not de limited I could run them flatout for over 1 to 2 minute stretches and did not find any stability issues. having said that though the C63 felt like it was a cut above the other 2 cars.

SebringSilver

That's pretty amazing.

DTMCLK

is this only on 6th gear? not even 7th?

harrower

I have found that 6th is the last gear with any meaningful pull in gaining mph on high end and that 7th acts like an over-drive where rpms fall and speed is essentially maintained or decreased a little. I have not had a long enough stretch of road to see if 7th would pull more mph than 6K+ in 6th. On several pulls I have done 187mph-195mph (on autobahn early in the morning for all those concerned about safety) with ranges of 5900-6300 rpm or so in 6th and then backed off (for obvious reasons)or had it drop into 7th where I lost the pull.