I would think that it would be 3% high to get more warranty...? If the speedo was saying 100 and you were going 97, for every hour you clocked you'd add an extra 3 in mileage on the vehicle.
I'm putting an extra 4 on mine... No wonder my odo seems to be going up so darned fast!
I was wondering why people were riding my butt so bad in my commuter Civic. I put the GPS in and turns out when I'm showing 55 MPH I'm really doing about 50 MPH. No wonder people were hating my guts.
55 mph? What freeway do you drive on???
My morning commute is usually spent at 75+.
Yea, I'd be saying "WTF is this guy thinking?" if I suddenly closed on you at +25 mph.
One of my vehicles matches the speed TT indicates to the mark; however, another vehicle is off by several mph. Leads me to believe the vehicle that doesn't match may have a speedo error. Thoughts?
I work on a large DOE facility where the speed limits are very conservative and the M16 carrying security is extremely tough.
The GPS is right on. I'd recommend you get your speedometer calibrated if you're off by 5mph or more. Typically what causes this problem is using tires or wheels that are not the OEM size.
It's pretty easy to check your odometer on an interstate with mileposts. Test sections are even more accurate. If you're that concerned (and have a mechanical gear/cable setup), you can buy a new gear based on the error ratio.
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.