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Measuring Speed re Speedometer +/-
A speedometer measures speed does anybody know one if modern service repairs for main dealers in this case Citroen are able to check a speedo without a rolling road .
Reason new car last week Citroen C3 Picaso is giving me distinct impression that speed is out by about 3 to 5 mph . That is reading 30 MPH where true speed is probably nearer 27MPH .
Based on one driving impression that i am driving slower than the speedo reads . GPS is reading roughly 3MPH under speedometer and limited tests with Your speed is type camera reinforces that .
jje
Reason new car last week Citroen C3 Picaso is giving me distinct impression that speed is out by about 3 to 5 mph . That is reading 30 MPH where true speed is probably nearer 27MPH .
Based on one driving impression that i am driving slower than the speedo reads . GPS is reading roughly 3MPH under speedometer and limited tests with Your speed is type camera reinforces that .
jje
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Comments
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Man lands on elvis. Pope sh*ts on moon etc etc0
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Within acceptable tolerances. You can get speedo's calibrated but for 3mph is it worth the cost to you?Censorship Reigns Supreme in Troll City...0
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A speedometer measures speed does anybody know one if modern service repairs for main dealers in this case Citroen are able to check a speedo without a rolling road .
Reason new car last week Citroen C3 Picaso is giving me distinct impression that speed is out by about 3 to 5 mph . That is reading 30 MPH where true speed is probably nearer 27MPH .
Based on one driving impression that i am driving slower than the speedo reads . GPS is reading roughly 3MPH under speedometer and limited tests with Your speed is type camera reinforces that .
jje
GPS is, in principle, extremely accurate. The limit is your ability to drive in a straight line at a constant speedo. reading for, let's say, 100-200m.0 -
my gps says im 4mph slower than reality. means i can do 74mph and know its only 70mph. They are supposed to be like that.Target Savings by end 2009: 20,000
current savings: 20,500 (target hit yippee!)
Debts: 8000 (student loan so doesnt count)
new target savings by Feb 2010: 30,0000 -
Speedo in the car can over read, but it's not allowed to under read.“I may not agree with you, but I will defend to the death your right to make an a** of yourself.”
<><><><><><><><><<><><><><><><><><><><><><> Don't forget to like and subscribe \/ \/ \/0 -
If you want the speedo testing for calibration you need to find a centre that does VOSA HGV Tachograph tests. HGV and Coach tachographs have to be tested for accuracy every 2 years for both the speed and the odometer. They have a rolling road properly calibrated and will carry out a set of tests to tell you how accurate the speedo is at registering speed and the odometer is at registering distance.
There are places that will recalibrate your speedo but its not cheap.0 -
So its a rolling road needed then .
Dont think i will bother let it get worse and put it under warranty .
jaydeeuk1 >>the word is not mormon but very very close to it .
jje0 -
So its a rolling road needed then .
Dont think i will bother let it get worse and put it under warranty .
There is nothing wrong with your speedo. Change your tyres that will have more effect than anything else. Every millimeter you scrub off your tyres will affect your speedo reading.0 -
Is any of this really worth the effort?:cool:0
This discussion has been closed.
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