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Hit Govern - Top Speed

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Old 04-07-2008, 01:07 PM
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Hit Govern - Top Speed

C-300 stick topped out at 140mph. Car was very stable. Did between 135-140 for a good 2 minutes without problems.
Old 04-07-2008, 02:23 PM
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2008 C280 Avantgarde
Originally Posted by mbenz06
C-300 stick topped out at 140mph. Car was very stable. Did between 135-140 for a good 2 minutes without problems.
Well I think it can reach 245 km/h without any problems.... anybody gone higher??
Old 04-07-2008, 02:52 PM
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2008 C300
Were you on the autobahn?

Where in the USA can you drive 140mph for two minutes?
Old 04-07-2008, 04:15 PM
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c220 cdi sport
Originally Posted by Hazemonster
Were you on the autobahn?

Where in the USA can you drive 140mph for two minutes?
when you're being followed by a car with flashing blue lights, in order to confirm that yes, your speedo is working correctly after all.
Old 04-07-2008, 05:15 PM
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2008 C300 Sport, RWD, US
You might want to check the speed rating of your tires before you do that next time.

....and say your goodbyes to anyone that'll miss you.
Old 04-07-2008, 05:45 PM
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Originally Posted by Hazemonster
Were you on the autobahn?

Where in the USA can you drive 140mph for two minutes?
youtube is full of videos with people who videotape themselves doing this, typically on interstates in the western states.
Old 04-07-2008, 06:26 PM
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'08 C300 Lux Barolo Red Beige Leather P2 MM 18" wheels '84 944
How fast?

<<You might want to check the speed rating of your tires before you do that next time. ...and say your goodbyes to anyone that'll miss you.>>

US models with H-rated tires are governed at 130mph. The speedo might read 2-3 mph higher.
Old 04-08-2008, 12:43 AM
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Originally Posted by JimPap
You might want to check the speed rating of your tires before you do that next time.

....and say your goodbyes to anyone that'll miss you.
The Sport models come with high performance tires as standard (V or W), so 140 mph is well below the limit. Althogh I would reccomend running your tires at the reccomended "high speed" pressure (usually +4-5 psi).

It is so amusing that some people actually believe that higher speed driving translates to more accidents...
Old 04-08-2008, 03:07 AM
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2008 C300 Sport, RWD, US
Originally Posted by Untertürkheim
The Sport models come with high performance tires as standard (V or W), so 140 mph is well below the limit. Althogh I would reccomend running your tires at the reccomended "high speed" pressure (usually +4-5 psi).

It is so amusing that some people actually believe that higher speed driving translates to more accidents...
The tires that come with the standard C300 are rated for 130 mph (H rated). High performance in this instance relates to handling ability, not top end speed.

I am a bit surprised that the governer stopped him at 140. Thought I had read somewhere that it was suppose to stop you at 155 mph, but then think of the carnage.
Old 04-08-2008, 03:29 AM
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C300 Sport/Palladium Silver on Black/P2
Originally Posted by JimPap
The tires that come with the standard C300 are rated for 130 mph (H rated). High performance in this instance relates to handling ability, not top end speed.

I am a bit surprised that the governer stopped him at 140. Thought I had read somewhere that it was suppose to stop you at 155 mph, but then think of the carnage.
In the U.S. our governors are at 130 MPH (even on the 350) cause they only give us H rated tires as you said.

In Europe, the same engine cars are allowed to go up to just past 150, since they give you a higher rated tire there.
Old 04-08-2008, 03:31 AM
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2008 C300 Sport, RWD, US
Originally Posted by mac911
In the U.S. our governors are at 130 MPH (even on the 350) cause they only give us H rated tires as you said.

In Europe, the same engine cars are allowed to go up to just past 150, since they give you a higher rated tire there.
Make sense, but aren't the European models something other than C300?
Old 04-08-2008, 06:36 AM
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2008 C300
Originally Posted by Untertürkheim
It is so amusing that some people actually believe that higher speed driving translates to more accidents...
Yeah..why would we think that? You have a bunch of cars driving the speed limit, and one car doing more than twice the legal limit, possibly zipping in and out of the cars obeying the law. Why would anyone think there might be a problem with that?
Old 04-08-2008, 09:42 AM
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2003 Suzuki TL1000R, 1999 E320, 2008 C350
Originally Posted by Untertürkheim

It is so amusing that some people actually believe that higher speed driving translates to more accidents...
Not necessarily more accidents, just more deadly ones.
Old 04-08-2008, 10:50 AM
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C300 Sport/Palladium Silver on Black/P2
Originally Posted by JimPap
Make sense, but aren't the European models something other than C300?
Yes, that is why I called them "same engine cars." The C300 in Europe is the C280 (same engine). There it is allowed to go up to 150 something cause it has the appropriate tires.
Old 04-08-2008, 11:16 AM
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tire pressure was set to 38psi rear 35 front on Z rated tires going straight on an empty road with no cars. Engine didn't cut power till around 138-140 and the speed stayed constant at 140.
Old 04-08-2008, 11:26 AM
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2008 C300 Sport, RWD, US
Originally Posted by mbenz06
tire pressure was set to 38psi rear 35 front on Z rated tires going straight on an empty road with no cars. Engine didn't cut power till around 138-140 and the speed stayed constant at 140.
Doesn't that hurt on a rough road?
Old 04-08-2008, 01:24 PM
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Originally Posted by JimPap
Doesn't that hurt on a rough road?
Ride was fine and I doubt anyone would do those speeds on that rough of a road.
Old 04-08-2008, 03:20 PM
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2008 C300 Sport, RWD, US
Originally Posted by mbenz06
Ride was fine and I doubt anyone would do those speeds on that rough of a road.

I need to work on clarity.

How about, "during regular driving, do you find that z rate tires inflated to 35 psi, ride rough....especially over potholes."
Old 04-08-2008, 07:06 PM
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Originally Posted by JimPap
I need to work on clarity.

How about, "during regular driving, do you find that z rate tires inflated to 35 psi, ride rough....especially over potholes."

More rough than usual but nothing I can't tolerate. Still feels like a mercedes sedan and not as rough as my CLK
Old 04-08-2008, 07:52 PM
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Saks C350
Stock 18" AMG's with ContiSport are Y rated and have pulled up to 134 (With a 07 Civic Si taling my dust ) before Gov kicking in. Also if you are relying on your dash speedometer then it may not be correct.
Old 04-09-2008, 01:23 PM
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Originally Posted by BenzoNY
Stock 18" AMG's with ContiSport are Y rated and have pulled up to 134 (With a 07 Civic Si taling my dust ) before Gov kicking in. Also if you are relying on your dash speedometer then it may not be correct.
Ya had the digital dash speed which said 140... Was that incorrect?
Old 04-09-2008, 07:23 PM
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2008 C300W
Speed Limiter Kicked in at...

... an indicated 132 on the southbound 405.

In a 6-speed C300 Sport with 18" AMGs.
I'm fairly certain that all C, E and S-class cars (non-AMG) are in fact electronically limited to 130, regardless of which wheel+tire package is on the car.

Most of the AMG cars have a 155 mph limiter, and a few of the super high horsepower cars can be order with a special package that raises top speed to 186 mph.

Them's the facts as I choose to believe them.
Old 04-09-2008, 11:33 PM
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08 C350, mars Red, Pano, PII, M.Media, Ipod. 18" AMG rims
Originally Posted by mbenz06
C-300 stick topped out at 140mph. Car was very stable. Did between 135-140 for a good 2 minutes without problems.
140??? i dont know if there is any difference between c350 and the c300 govrn limit cuz i can only hit 135mph and i was doin that 4 at least 3mins..it doesnt go any more its stops like if the traction control goes on...that **** suckss ballzzz
Old 04-10-2008, 10:07 AM
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'14 GLK250 Diesel
This is, at best, an academic discussion - no speedometer is precise enough to tell you the difference, accurately, between 135 and 140 mph - the 5 mph difference is well within the margin of error.

And to whomever was asking, the digital display is merely repeating what the analog readout is showing - you aren't going to see a difference between the two.

Anyway, the governor in each model is set to keep the speed below one of two thresholds, depending on the market:

-The limit imposed by the tire rating.....OR....
-The 155 mph [250 kph] German "voluntary" limit on those cars in those markets where this is politically acceptable.

So put your foot down if you must....but don't get too excited about the differences we're reading about here. There are too many other variables - temp, wind speed, tire pressures, individual engine production variations, tire make and model.....and then the computer governor.

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