neone notice that our speedometer reading is not accurate?
05-17-2004, 10:57 AM
#15
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Mine is not even close (more)
At a readout of 140km/h, I am travelling at 131km/h by GPS, and the accuracy just gets worse and worse. It's almost dead on until 100km/h, then it starts getting really out of whack. I've had it reading 220km/h and still pulling, and I know the car is limited to 210km/h. Audi won't address it, wish there was some way to calibrate the f'n thing on my own.
05-17-2004, 10:59 AM
#16
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Well, there's being slightly fast, then there's being ridiculously fast
I can't trust mine at all. I'd have no problem if it was no more than 5km off at any point, but that is not the case with my car.
05-17-2004, 01:22 PM
#18
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<sigh> That is by design and working exactly as intended
From Car and Driver:
"The European regulation, ECE-R 39, is more concise, stating essentially that the speed indicated must never be lower than the true speed or higher by more than one-tenth of true speed plus four kilometers per hour (79.5 mph at a true 70). Never low. Not even if somebody swaps a big set of 285/35R-18s for stock 255/45R-16s."
Since modern speedometers are electronically controlled, they program them to exagerate more at higher speeds to be safe.<ul><li><a href="http://www.caranddriver.com/article.asp?section_id=4&article_id=1906&p age_number=1">Car and Driver article</a></li></ul>
"The European regulation, ECE-R 39, is more concise, stating essentially that the speed indicated must never be lower than the true speed or higher by more than one-tenth of true speed plus four kilometers per hour (79.5 mph at a true 70). Never low. Not even if somebody swaps a big set of 285/35R-18s for stock 255/45R-16s."
Since modern speedometers are electronically controlled, they program them to exagerate more at higher speeds to be safe.<ul><li><a href="http://www.caranddriver.com/article.asp?section_id=4&article_id=1906&p age_number=1">Car and Driver article</a></li></ul>
05-18-2004, 06:48 AM
#20
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Just because it's by design doesn't make it right
I don't live in Germany, and I don't need my car to protect me from knowing how fast I'm going. Why would you defend this behaviour?
I invite you to take a drive in my car with a GPS, and you'll see just how far out it is. It's not 2-3mph like everyone else seems to claim. My B5 A4 was dead on, why wouldn't my B6 be the same way.
I invite you to take a drive in my car with a GPS, and you'll see just how far out it is. It's not 2-3mph like everyone else seems to claim. My B5 A4 was dead on, why wouldn't my B6 be the same way.