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Old 07-20-2019, 12:00 AM   #1
d_rook92
 
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Question Speedometer correction??

Hey everybody, new to the forum I just bought my second Nissan to commute to work itís a 95 pickup SEV6 with low miles, factory it comes with 265/75r15 tires, today I decided to drop sizes to make it easier on the truck on the highway, I dropped it to a 255/60R15 and now my speedo is 12 miles faster than actual speed, any ideas on what I need to do to fix it? Thanks!!
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Old 07-20-2019, 12:47 AM   #2
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Okay, first, take out the glass on your instrument cluster. Now get some duct tape and cat whiskers.....sorry, I am just a smart ass. My speedo is off about 10 percent. Over the years I have become accustomed to using a Garmin Gps unit in every vehicle I drive. I use it for the speedo primarily because I don't need to look away from the road to read dash panel. I drive over 150 miles each day to several new addresses for work. I prefer navigation info above dash in my line of sight.The unit keeps track of the posted speed limit and alerts me if I am over the limit. It also gives me a heads-up if I am approaching a red-light camera intersection. I hate using my smart phone for navigation, too small and a call or text interrupts the map display. Other IN members can probably tell you about transmission sensors or gears to change your readings, at least until you change you tire size again. Sorry if this answer doesn't suit your needs.
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Old 07-20-2019, 01:25 PM   #3
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Quote:
Originally Posted by d_rook92 View Post
Hey everybody, new to the forum I just bought my second Nissan to commute to work itís a 95 pickup SEV6 with low miles, factory it comes with 265/75r15 tires, today I decided to drop sizes to make it easier on the truck on the highway, I dropped it to a 255/60R15 and now my speedo is 12 miles faster than actual speed, any ideas on what I need to do to fix it? Thanks!!
2wd trucks came with 14" rims with 195/75/14 or 205/75/14. 2wd Pathfinders came with 15" rims with 235/75/15.
Now 4wd Hardbodys came with 235/75/15 tires from the factory. 4wd Pathfinders came with 235/75/15 or the optional 30/9.50/15 tires.

The numbers that you announced do not coincide with what actually is put on these trucks. Check your door sticker.
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Old 07-21-2019, 01:01 PM   #4
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Originally Posted by david29 View Post
2wd trucks came with 14" rims with 195/75/14 or 205/75/14. 2wd Pathfinders came with 15" rims with 235/75/15.
Now 4wd Hardbodys came with 235/75/15 tires from the factory. 4wd Pathfinders came with 235/75/15 or the optional 30/9.50/15 tires.

The numbers that you announced do not coincide with what actually is put on these trucks. Check your door sticker.
I apologize it actually says 31/10.5r15, if I could figure out how to post a picture I would do that!
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Old 07-21-2019, 01:02 PM   #5
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Quote:
Originally Posted by nunya View Post
Okay, first, take out the glass on your instrument cluster. Now get some duct tape and cat whiskers.....sorry, I am just a smart ass. My speedo is off about 10 percent. Over the years I have become accustomed to using a Garmin Gps unit in every vehicle I drive. I use it for the speedo primarily because I don't need to look away from the road to read dash panel. I drive over 150 miles each day to several new addresses for work. I prefer navigation info above dash in my line of sight.The unit keeps track of the posted speed limit and alerts me if I am over the limit. It also gives me a heads-up if I am approaching a red-light camera intersection. I hate using my smart phone for navigation, too small and a call or text interrupts the map display. Other IN members can probably tell you about transmission sensors or gears to change your readings, at least until you change you tire size again. Sorry if this answer doesn't suit your needs.



Haha either way, thanks for the humor nunya
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Old 07-21-2019, 01:17 PM   #6
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Here is the truck now with the smaller tires on it and the door sticker stating 31/10.5r15 as factory tire size
Attached Images
File Type: jpeg 8CEC1E15-9E76-4BC7-BB81-37CF4A7CAEF2.jpeg (15.9 KB, 2 views)
File Type: jpeg 60F79C9D-219D-4FFB-99BD-564E8B29F67A.jpeg (19.5 KB, 2 views)
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