Speedometer Calibration
Team Owner
Joined: Mar 2006
Posts: 20,172
Likes: 1,818
From: Bakersfield
I have 2 GPS, mi cell and a dedicated handheld which supports WAAS (more accurate). I'm from mexico and at 230 km/h (142 mph) in the speedometer, the GPS shows only 212 km/h (131 mph), that's 18 km/h off, about 11 miles.
I'm very dissapointed of this because I check every car I can and I have tested that on Hondas, Nissans, Fords, WVs, and all of them read very very accurate, less than 1% off. even a new generation Honda Civic with digital speedometer which is much more easy to compare, it was 100% accurate with the GPS. so the speedometer in my Acura TL 2007 is WRONG! and I think all of them are as well.
Went to the Acura dealer and asked if they can recallibrate my speedometer, and they said it wasn't possible, that there is no way to recallibrate the speedometer.
The worst part here is not the error in the speedometer reading, but the total miles that the car REALLY have, my car now have about 45,000 miles but it should have slightly above 40,000, and as this number increases, the error increases also.
Does someone knows if it's is possible to recallibrate the speedometer?????????
I'm very dissapointed of this because I check every car I can and I have tested that on Hondas, Nissans, Fords, WVs, and all of them read very very accurate, less than 1% off. even a new generation Honda Civic with digital speedometer which is much more easy to compare, it was 100% accurate with the GPS. so the speedometer in my Acura TL 2007 is WRONG! and I think all of them are as well.
Went to the Acura dealer and asked if they can recallibrate my speedometer, and they said it wasn't possible, that there is no way to recallibrate the speedometer.
The worst part here is not the error in the speedometer reading, but the total miles that the car REALLY have, my car now have about 45,000 miles but it should have slightly above 40,000, and as this number increases, the error increases also.
Does someone knows if it's is possible to recallibrate the speedometer?????????
the difference can be made up for with tire size, correct. search online for calculators, there is one i tirerack i believe that tells you the % differance
Instructor
Joined: Nov 2009
Posts: 225
Likes: 0
Actually I forgot about that but I will be sure to bring it up in court next month, I want to spend this time wisely getting my ammunition together before I go to court and fight it. If all else fails they have this neat little law in North Carolina called prayer for judgment where they give you an indefinite continuance unless you get another violation in a certain time period.
Blessed
Blessed
Hey, it sucks, but it is what it is.
Team Owner
Joined: Mar 2006
Posts: 20,172
Likes: 1,818
From: Bakersfield
Let's not forget that the navi TLs *might* have a tires size correction already applied. I'm not sure if it's even legal for the OEM to adjust odo rate it but there's a screen in the diagnostics with tires size correction. It's been so long that I've forgotten the actual numbers but it was -1.xx% which at the time I did the math and it came out to almost exactly the size difference in my new tires vs OEM.
Just check the spedo on the highway, 60 mph, 60 seconds 1 mile (between markers), or just check the mileage markers with the odometer.
Good thing you don't live in Sweden and are wealty:
Swedish driver, eluding radar, faces up to $962,000 ticket for driving 180 MPH.
Good thing you don't live in Sweden and are wealty:
Swedish driver, eluding radar, faces up to $962,000 ticket for driving 180 MPH.
Team Owner
Joined: Mar 2006
Posts: 20,172
Likes: 1,818
From: Bakersfield
Off topic but I'm going to check my correction % and then use the mileage markers as you suggested.
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