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Re: speedometer Posted by Snowmobile [Email]  (#686)  [Profile/Gallery]
(more from Snowmobile) on Wed, 23 Sep 2015 09:33:30
In Reply to: speedometer, AeroEd, Wed, 23 Sep 2015 09:06:51 Members do not see ads below this line. - Help Keep This Site Online - Signup |
I think he just used the wrong word - that they are 10% high, ie looks 100km/h, is 90km/h... vs SAABs that maybe look 100km/h are 95km/h or whatever. Though really, mileage is tracked through the odometer, but again, if it says you traveled more than you really did you get a higher mpg...
That said, wheels can make as much as +/- 4% difference depending on variations in tire choice (usually a few reasonable sizes), etc. I have a 2004 arc running 225/45R17 (205/55R16 winter is the same diameter), but stock was 215/55R16 which is a few % off... I believe you can update this with a Tech2, but I have not done so. I suspect my mpg and speedo readings are off as a result.
I'm not sure why it would be a big deal to show the speed too low as long as it was not extreme. I get it from the perspective of policing, but due to tolerances in tires, radar guns, calibrations, etc, they have to leave a little margin anyway. I know some places in the world ticket if you are 1mph over, but imho, that is a ridiculous waste of time, and probably reduces safety if everyone spends too much time watching their speedo! Eye time is valuable when driving and that one should be a small fraction of it!
, Tue, 22 Sep 2015 10:09:52, Fri, 25 Sep 2015 17:45:32
, Fri, 25 Sep 2015 06:34:26, Sat, 26 Sep 2015 08:01:23, Fri, 25 Sep 2015 17:49:29, Fri, 25 Sep 2015 16:17:43, Thu, 24 Sep 2015 18:09:52
, Wed, 23 Sep 2015 07:54:50, Mon, 28 Sep 2015 07:39:56, Wed, 23 Sep 2015 09:33:30 <-- Viewing This Message
, Tue, 22 Sep 2015 14:29:01, Thu, 24 Sep 2015 09:41:36, Thu, 24 Sep 2015 13:25:40, Thu, 24 Sep 2015 16:10:42
, Tue, 22 Sep 2015 11:36:22, Thu, 24 Sep 2015 14:52:03
, Wed, 23 Sep 2015 10:16:40, Tue, 22 Sep 2015 11:26:53
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