Speedo Recal
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Freshman User
Joined: Dec 2007
Posts: 42
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From: Valparaiso, IN
Yes But...
Yes but my truck is just about out of warranty. I replaced the stock tires as they wore out...went to what are essentially 33" tires with no lift...looks really good this way. I checked my speed with a GPS and I am reading 2mph low...probably not worth worrying about.
FTE Leadership Emeritus
Joined: Jul 2002
Posts: 42,561
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From: Long Island USA
Yes but my truck is just about out of warranty. I replaced the stock tires as they wore out...went to what are essentially 33" tires with no lift...looks really good this way. I checked my speed with a GPS and I am reading 2mph low...probably not worth worrying about.
My speedo is now about 1 MPH low at 60MPH. Not enough to care about.
Just think how far it was off (on the high side) BEFORE the tires
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Freshman User
Joined: Dec 2007
Posts: 42
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From: Valparaiso, IN
Yup
I know! Based on GPS and those roadside radar units the DOT puts out, my speedo was about 2 mph higher than actual speed.
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Tuned
Joined: Apr 2005
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For liability reasons, most car makers have 3%-5% error on the high side built in. This is to keep you from suing or claiming liability to the car manufactures for your lead foot and speeding tickets.
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Joined: Mar 2007
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From: Dunwoody, GA
yes, mine was this way until I had it fixed. I don't like it being off and not being able to correctly caclulate my mpg.
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Joined: Mar 2007
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From: Dunwoody, GA
compared to a lil 4banger no, but I can get 19mpg+ on the highway with 35" tires. Plus I like to know if my mpg starts to drop of significantly as this would be a sign that something is not working properly.