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Old 10-02-2007
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I am: Mario Perez
Join Date: Sep 2006
Location: Kingsville, Texas
Vehicle: 2006 Ford Ranger FX4 II
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Icon5 35s Speed-O off???

Now that i have 35s how bad is my speed-o off
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Old 10-03-2007
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I am: Vincent R
Join Date: Mar 2007
Location: Austin, TX
Vehicle: 1996 Ford Ranger XL
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when im doing 50 im actually doing about 60+ mines pretty jacked up.
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Old 10-03-2007
Fx4wannabe01's Avatar
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I am: Shane B
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Location: Boring, Oregon
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superlift has a programer thing that re-calibrates your computer to your new tire size. I know nothing about this product....but its called something like "Speed-Cal" or something like that.

I believe Bamachips has this option.
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Old 10-03-2007
99ranger4x4's Avatar
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I am: Matt P.
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when my speedo says 40 its actually ~42, 50 or 55 its about 5 over, when it says 61ish im doin about 67.. then around 66-67 im goin about 74. and anything under 40 isnt anything to worry about

my 0.02... unless you were planning on getting a programmer, don't buy it just for this reason lol
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Old 10-03-2007
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I am: Terrence L
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Vehicle: 2001 ford ranger edge plu
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according to this "speedometer to tire speed calculator" that i've got, if your truck originally had 245's, and now you have 35's (305's) your speedo should say 65, but your tires are doing 75. however, ford rangers are noted for having their speedo's set a few miles faster than the truck is really doing. my truck, when new, was going about 3 mph less than what the speedo actually read. so, when i went from 245's to 265's, my speedo is now dead on with what the tires are actually rotating at.
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