Anyone know of a place in Virginia that will calibrate and certify speedometers?
#1
Instructor
Thread Starter
Anyone know of a place in Virginia that will calibrate and certify speedometers?
Does anyone know of a place in Virginia (preferably Northern Virginia) that will calibrate and certify my speedometer reading?
I got speeding ticket and was told that having your speedometer checked, and showing up in court with documentation saying your speedometer was off is very common. I'd like the calibration to show it's 4 mph too low . . .
b-man
I got speeding ticket and was told that having your speedometer checked, and showing up in court with documentation saying your speedometer was off is very common. I'd like the calibration to show it's 4 mph too low . . .
b-man
#3
Burning Brakes
Good luck. German laws require that speedometers are optomistic, and while there is no such law in the US, the German manufacturers don't care to have to assembly processes and just make them all optomistic. You'll likely find that it reads at least 2mph higher than reality.
#4
Rennlist Member
If you are a AAA member, you can call the office and find out when their traveling speedo checking system will be at a location near you. I did this many years ago so I am not 100% sure they still do it, but it was a great service.
#5
Drifting
There are a few authorized shops that do the speedometer calibration. I think the list is on the DMV website. You have to use an authorized shop and get a certificate for the court. My lawyer (last time I got a ticket) gave me the name of a place in Fairfax. I will try to dig it up in the Rolodex tomorrow. FWIW, my speedometer was actually a couple of mph faster -- WRONG DIRECTION -- so it showed 78 mph at 75 mph.
#6
Drifting
Speedometer accuracy is a function of tire inflation and/or wear.....
Same problem with the officer's car, speedometer "head" can be bench calibraded but that doesn't account for inaccuracies as installed, and throughout the day as the tire heat and expand due to pressure increase.
Same problem with the officer's car, speedometer "head" can be bench calibraded but that doesn't account for inaccuracies as installed, and throughout the day as the tire heat and expand due to pressure increase.
#7
Instructor
Thread Starter
Originally Posted by programmatore
There are a few authorized shops that do the speedometer calibration. I think the list is on the DMV website. You have to use an authorized shop and get a certificate for the court. My lawyer (last time I got a ticket) gave me the name of a place in Fairfax. I will try to dig it up in the Rolodex tomorrow. FWIW, my speedometer was actually a couple of mph faster -- WRONG DIRECTION -- so it showed 78 mph at 75 mph.
b-man
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#8
Drifting
Originally Posted by b-man
Unfortunately, I know my speedometer reads high. I'm looking for a place that might be uhhh . . . driver friendly. Anyone can send me a private message if they want. Thanks.
b-man
b-man
You might try to have a "friendly" independent mechanic to sign an affidavit that there was something wrong with the car (eg. wrong tire size, malfunctioning ABS system which can affect the speedo, etc.) but I would just get a lawyer, plead it down from reckless to speeding, take the points, then attend driver improvement to get rid of 2 of those points.
Good luck.
#9
Originally Posted by b-man
Unfortunately, I know my speedometer reads high. I'm looking for a place that might be uhhh . . . driver friendly. Anyone can send me a private message if they want. Thanks.
b-man
b-man
#10
Originally Posted by programmatore
Sorry buddy. But I was told that the court (Fairfax) will only accept calibrations with certificate from authorized shops.
#12
Yeah, I wish . . . My driving record, which only goes back 10 years in DC, was spotless before this ticket. I hope to keep it that way
I am pro law enforcement, but the guy who gave me a ticket was a real tool, and not only because he gave me a ticket
I am pro law enforcement, but the guy who gave me a ticket was a real tool, and not only because he gave me a ticket
#14
Instructor
Thread Starter
Originally Posted by washington dc porsche
A Porsche dealership.
b-man