E63 S electronically limited to 300 km/h
It puzzled me how it could only go to 300 when m5 and panamera turbo s where going above with similar power ratios and with worse drag coefficient, and after seeing videos where the 9th gear would only kick around 300kmh I decided to research this and found that it is still electronic limited.
Why is that? Is this a normal behavior? One pays for unlimited car speed and then he discovers that it is still limited??
How often do you have the chance to run the car to 300 km/h?
During my European delivery vacation we spent most of the time still in the break-in period, but did get a chance to open it up on the last couple of days.
Even on the unlimited sections of the autobahn it was hard to find clear space to really let the car stretch its legs. Best we did was about 275 km/h before having to back out of it. The car was still pulling hard at that point though so I don't doubt it would pull all the way to 300 km/h. But I'll bet were it unlimited it won't pull that much over 300 km/h due to a combination of exponentially increasing wind drag and where the motor is at in the power curve by that point. So it is probably not THAT much of a limitation.
After the car shipped to the States I've only exceeded 100 mi/h a handful of times, contenting myself mostly with some hard acceleration here and there and enjoying twisty roads at mostly legal speeds. So the limit hasn't really impacted me and I'll bet most are in the same boat.
How often do you have the chance to run the car to 300 km/h?
During my European delivery vacation we spent most of the time still in the break-in period, but did get a chance to open it up on the last couple of days.
Even on the unlimited sections of the autobahn it was hard to find clear space to really let the car stretch its legs. Best we did was about 275 km/h before having to back out of it. The car was still pulling hard at that point though so I don't doubt it would pull all the way to 300 km/h. But I'll bet were it unlimited it won't pull that much over 300 km/h due to a combination of exponentially increasing wind drag and where the motor is at in the power curve by that point. So it is probably not THAT much of a limitation.
After the car shipped to the States I've only exceeded 100 mi/h a handful of times, contenting myself mostly with some hard acceleration here and there and enjoying twisty roads at mostly legal speeds. So the limit hasn't really impacted me and I'll bet most are in the same boat.
there was a lot of money spent here in roads and everything else was left behind so we have lots of good roads with no traffic.
but it is not the point here. let a car go to where it can!
there is the anachronic limitation of 250 km/h (https://www.autoevolution.com/news/g...sir-47736.html) and one has to pay to remove the top speed limit and then finds out that this is not truly unlimited !!
this is ludicrous.

and one gets there in 8th gear and the 9th only enters around the (new) speed limit. so why 9 gears when the car will almost never use it?
Last edited by tonecas; Sep 27, 2018 at 01:49 PM.
It puzzled me how it could only go to 300 when m5 and panamera turbo s where going above with similar power ratios and with worse drag coefficient, and after seeing videos where the 9th gear would only kick around 300kmh I decided to research this and found that it is still electronic limited.
Why is that? Is this a normal behavior? One pays for unlimited car speed and then he discovers that it is still limited??
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ps. Brabus doesn’t move it to 315
when you show the numbers on the car speedometer aren't them offset in excess from the real speed (measured by a GPS or something)?
yes, could use brabus, alpina, etc to unlock the power. it seems a simple electronic limitation (like the 250 km/h limit). but how about the tires?
also i don't like to mess/tune cars. i like to use what is provided by the manufacturer as they know better what their hardware can handle. in this case it seems AMG is just curbing the max speed because of the tires. The Michelin Pilot Sport 4S seem to be rated only Y
Last edited by tonecas; Sep 27, 2018 at 05:21 PM.
yes, could use brabus, alpina, etc to unlock the power. it seems a simple electronic limitation (like the 250 km/h limit). but how about the tires?
also i don't like to mess/tune cars. i like to use what is provided by the manufacturer as they know better what their hardware can handle. in this case it seems AMG is just curbing the max speed because of the tires. The Michelin Pilot Sport 4S seem to be rated only Y
on short trips, tires will be able to handle 300+. M5 had been able to go 345kmh with no danger. If you stay on high speed for too long? It may blow.
4s rated at (101Y) at rear, which gives you an opportunity to exceed speed of 300kmh
on short trips, tires will be able to handle 300+. M5 had been able to go 345kmh with no danger. If you stay on high speed for too long? It may blow.
4s rated at (101Y) at rear, which gives you an opportunity to exceed speed of 300kmh
I do of course think this is too low speed, this summer I had max speed (290) for several hours during my trip to Germany. Sure will do the same thing next year.
Damn and I thought I had a fast cruise from Phoenix to Vegas- How could you go hours at 180 ? what roads are open enough with no traffic?
France has one or two highways where you can hit 300km/h for miles and miles, during the night. just have to pay attention to radars and cops
So, don't see two hours of cruising at 180 mph without fuel stops.










