How accurate is your speedometer

BMW Killa · 08-15-2009, 07:32 PM

Quote:

Originally Posted by rudi

After noticing a lot of cars tailgating me, I thought I would check my speed with a GPS. I found the speed to be out minus 10 kilometers/6.2 mph when traveling at 60k/37mph. Do you think this is excessive and Is there any way to have this adjusted?

You can have your speedo calibrated. That seems pretty excessive, I wouldn't expect to see more than a +/- 2 mph difference.

SDWayne · 08-15-2009, 07:35 PM

Do you have stock tires?

Wayne

rudi · 08-15-2009, 07:51 PM

Quote:

Originally Posted by SDWayne

Do you have stock tires?

Wayne

I've got the standard 18's. It's a bit of pain having to calculate your actual speed to compensate for the error all the time.

chrisw169 · 08-17-2009, 11:55 AM

I would take it to a dealer and say that its a brand new car w/ stock wheels and tires and have them fix it. That is very excessive in my opinion

Chan Chee Hoe · 08-18-2009, 06:35 AM

Quote:

Originally Posted by SDWayne

Do you have stock tires?

Wayne

I think the standard 18'' rear tyres is a bit smaller than the 19'' ones..

08-15-2009, 07:35 PM	#2 (permalink)
SDWayne Base Member Join Date: May 2009 Location: San Diego Posts: 11 Drives: 09 370Z touring Rep Power: 17	Speedometer error Do you have stock tires? Wayne

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08-17-2009, 11:55 AM	#4 (permalink)
chrisw169 Base Member Join Date: Feb 2009 Location: Lewisville, TX Posts: 42 Drives: 93 Honda Del Sol Rep Power: 17	I would take it to a dealer and say that its a brand new car w/ stock wheels and tires and have them fix it. That is very excessive in my opinion