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GreenRocket · 08-19-2008

I got out my GPS unit, dropped it in my tank bag's map pocket and took a ride to check the speedo the other night. I kept wondering why I was getting passed on a stretch of 55 mph highway when I was going an indicated 65...

At an indicated 40 mph the GPS showed 37-38
At 65 it showed 61-62
at 75 it showed 71

It seems to be off by a percentage instead of a solid #. I'll try to do a test involving higher freeway speeds one of these nights.

BTW, don't use my numbers to try to get out of a speeding ticket!

08-19-2008	#1862 (permalink)
GreenRocket Finally Got Into First Gear BTK Beginner Join Date: Jun 2008 Location: Malibu Hills Posts: 59	I got out my GPS unit, dropped it in my tank bag's map pocket and took a ride to check the speedo the other night. I kept wondering why I was getting passed on a stretch of 55 mph highway when I was going an indicated 65... At an indicated 40 mph the GPS showed 37-38 At 65 it showed 61-62 at 75 it showed 71 It seems to be off by a percentage instead of a solid #. I'll try to do a test involving higher freeway speeds one of these nights. BTW, don't use my numbers to try to get out of a speeding ticket!