Recalibration
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Laughing Gas
Joined: Aug 2005
Posts: 831
Likes: 0
From: Port Elgin, On
So how far off would it be if I have 285-70-17? Is it worth doing?
I used to have a '92 Bronco and I was able to adjust it using the trip reset button, I'm guessing that they must have changed that on newer trucks?
I used to have a '92 Bronco and I was able to adjust it using the trip reset button, I'm guessing that they must have changed that on newer trucks?
Post Fiend
Joined: Jun 2006
Posts: 9,714
Likes: 2
From: White Mnt's,New Hampshire
now a days every thing is done through the PCM.it will need to be programmed... sounds like your just changing rim size not tire size unless your running 265's right now...285's wont be that far off..maybe 3MPH
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Rather Be Floatin
Joined: Oct 2005
Posts: 2,468
Likes: 0
From: Marble Falls, Tx.
Are you sure it's off? I went up from 265's to 285's and according to my GPS im still 3 mph slow.
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Post Fiend
Joined: Feb 2007
Posts: 7,191
Likes: 4
From: Blairsville,Ga
one of the few things my Hypertec was good for was speedo calibration
when I changed from 215-85 to 235-85 speedo was off about 5 mph and trans seemed to work better when speedo was calibrated
now with DP speedo is off about 5 mph again
Don't know if that has anything to do with goofy 1-2 upshift or not
when I changed from 215-85 to 235-85 speedo was off about 5 mph and trans seemed to work better when speedo was calibrated
now with DP speedo is off about 5 mph again
Don't know if that has anything to do with goofy 1-2 upshift or not
