Speed limiter - what actually is it? 175 or 186 mph
#1
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Speed limiter - what actually is it? 175 or 186 mph
Theoretical question- I always thought the W212 E63 was limited to either 155 mph / 250 kph or 186 mph / 300 kph. The former for the non "S" and the latter for the "S".
However - in my '16 the limit seems to be 175 mph.
I know the speedo may not be 100%, but that's off the "wrong" way by 10 mph (which I think is HIGHLY unlikely) or 20 mph the "normal" way (which I also think is unlikely, 13% error). Checking the speedo against GPS speed (on radar detector) shows less than 1 mph off in speeds up to 100 mph.
Confused.
However - in my '16 the limit seems to be 175 mph.
I know the speedo may not be 100%, but that's off the "wrong" way by 10 mph (which I think is HIGHLY unlikely) or 20 mph the "normal" way (which I also think is unlikely, 13% error). Checking the speedo against GPS speed (on radar detector) shows less than 1 mph off in speeds up to 100 mph.
Confused.
#2
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175 is the highest I have seen in my 2016 Sedan. That being said, I was starting to run out of room - so did not have the luxury of waiting to see if it would still climb.
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2014 E63S; AMS 100 octane ecu tune; edok tcu tune; BB intakes; dyno tuned
You guys run this fast on an airstrip?
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cotmfk (05-29-2019)
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cotmfk (05-29-2019)
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#11
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It's 186mph stock on my car 100%
After all the upgrades and tune to remove the speed limiter I did I hit 218 mph ...ran out if road
After all the upgrades and tune to remove the speed limiter I did I hit 218 mph ...ran out if road
#12
#20
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Not saying you did not see 218 on the speedo. Any chance you changed the gearing? Or put on aftermarket wheels?
#21
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Interesting, wonder why?
I thought for a second that maybe because I'm a wagon I get 175. But you have a 2016 sedan. Same year, same limiter.
#22
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Gearing is stock, wheels were stock as well..I do have a set of 20inch Rohanas but never went over 140-150...just dont trust them as much as I do with the stock ones.
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#24
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How accurate is a speedometer after 180mph?
#25
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In the old days there was <5% error rule, but with electronic speedometers it's a matter of what is programmed in as the error. Most tests today show they are very accurate, usually less than 2 kph (so about 1 mph) and constant.
In my case I used the GPS on the radar detector to check the speed at lower speeds and it's dead on, zero error.
In my case I used the GPS on the radar detector to check the speed at lower speeds and it's dead on, zero error.