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07-12-2021, 07:31 AM
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#1 |
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Registered User
Join Date: Dec 2004
Location: Highland, IN
Posts: 2,326
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Wrong mileage
I just got back from the Southeastern Truck Nationals about an 800-900 mile round trip, depending on who you talk to. My truck showed 817, google showed 860 plus running around and my buddy shows 925, Thoughts on this?
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Chris _______________________________ 1979 Chevy Stepside SPORT 2018 Chevy Silverado, 39 years apart  My build 2008-2016. http://m.imgur.com/a/bURrE |
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07-12-2021, 07:38 AM
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#2 |
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Registered User
Join Date: Jun 2012
Location: madisonville ky
Posts: 313
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Re: Wrong mileage
Wrong tire size. It could make your Speedo off very little, but compounded over a long trip it would show on your odometer
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61 GMC 4x4 1-ton flatbed 4bt cummins, ranger od, sm465, np 205, d60F, d70R 4.11 10,000 ramsey PTO winch.... SOLD 73 k5 gm crate 350-265 / sm465 / np205 3.73 posi |
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07-13-2021, 07:40 AM
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#3 | |
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Registered User
Join Date: Dec 2004
Location: Highland, IN
Posts: 2,326
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Re: Wrong mileage
Quote:
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Chris _______________________________ 1979 Chevy Stepside SPORT 2018 Chevy Silverado, 39 years apart My build 2008-2016. http://m.imgur.com/a/bURrE |
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07-15-2021, 08:24 PM
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#4 |
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Just here to tinker
 
Join Date: Jun 2008
Location: Holland, MI
Posts: 3,697
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Re: Wrong mileage
Check your speedo against a speed app on your phone. My 88 suburban speedo shows 3 mph slower than actuality because I run 31" tires instead of the factory size.
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78 C10 SWB Diesel #1 (wrecked)http://67-72chevytrucks.com/vboard/s...1978+silverado 78 C10 SWB Diesel #2 (sold)http://67-72chevytrucks.com/vboard/s...d.php?t=650751 60 GMC Suburban (sold)http://67-72chevytrucks.com/vboard/s...d.php?t=445526 60 GMC 1000 (sold)http://67-72chevytrucks.com/vboard/showthread.php?t=298235 67 GMC 1500 (sold) http://67-72chevytrucks.com/vboard/s...d.php?t=803695 73 Chevy C20(Daily)http://67-72chevytrucks.com/vboard/s...d.php?t=852767 86 Suburban(summer unit) http://67-72chevytrucks.com/vboard/s...d.php?t=810697 88 Suburban 4x4(sold) |
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07-15-2021, 08:51 PM
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#5 | |
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Registered User
Join Date: Jun 2015
Location: PA
Posts: 441
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Re: Wrong mileage
Quote:
Going the same speed as another vehicle doesnt mean the milage will match. Especially if one or both of your speedometers arent accurate. A few MPH on both your trucks one way or the other can add up to... well... the difference in your milage and his milage for the same trip
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- When the Reaper makes his deal, trust in your steel - '77 C10 350/350 2/4 drop and a mild street engine |
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07-15-2021, 08:54 PM
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#6 |
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Post Whore
 
Join Date: May 2015
Location: Alabama
Posts: 14,670
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Re: Wrong mileage
GPS is what I was gonna also say..I have a handheld and checked my C30..it was off..used it to recalibrate my z71 when I went to 285s..
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Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver |
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