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    From Jim Haight@1:218/700 to All on Wed May 29 18:12:17 2013
    So I was thinking about increasing the diameter of the tires on my 2012 Ford Escape. Stock is 135 x 70 x 16 and in the forums, people are going up to 145 x75x16 for an inch more height along with H&R lifting springs which give another inch. In as much as the final drive ratio has changed then the speedometer is off. Someone said that nowadays, you can get software that
    will recalibrate the speedo as well as reprogram the power curve of the
    engine to accomodate the change in your tire diameter that would help with
    the slight decrease in gas mileage. I have done performance flash before on
    a VW gti but never thought about how you can recalibrate the speedometer digitally.

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  • From TOM WALKER@1:218/700 to JIM HAIGHT on Thu May 30 04:56:00 2013
    So I was thinking about increasing the diameter of the tires on my 2012 Ford JH>Escape. Stock is 135 x 70 x 16 and in the forums, people are going up to 145 JH>x75x16 for an inch more height along with H&R lifting springs which give JH>another inch. In as much as the final drive ratio has changed then the JH>speedometer is off. Someone said that nowadays, you can get software that JH>will recalibrate the speedo as well as reprogram the power curve of the JH>engine to accomodate the change in your tire diameter that would help with JH>the slight decrease in gas mileage. I have done performance flash before on JH>a VW gti but never thought about how you can recalibrate the speedometer JH>digitally.

    IF you have a recalibratable Electronic Speedometer check out this web
    site.

    http://www.autometer.com/tech_faq_answer.aspx?sid=2&qid=40
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  • From Roy Witt@1:218/700 to Jim Haight on Thu May 30 10:11:51 2013

    Jim Haight wrote to All:

    So I was thinking about increasing the diameter of the tires on my
    2012 Ford Escape. Stock is 135 x 70 x 16 and in the forums, people
    are going up to 145 x75x16 for an inch more height along with H&R
    lifting springs which give another inch.

    The springs will have nothing to do with the tire diameter or your speedo error.

    In as much as the final drive ratio has changed then the speedometer
    is off.

    135/70x16 = 23.44" x PI = 73.64" circumference = 860.4 rpm/mile
    145/75x16 = 24.57" x PI = 77.19" " " = 820.8 rpm/mile

    Ford is capable of reprogramming your car with their scan tools. All they
    do is re-enter the new tire diameter and you're all done.

    Someone said that nowadays, you can get software that will
    recalibrate the speedo as well as reprogram the power curve of the
    engine to accomodate the change in your tire diameter that would help
    with the slight decrease in gas mileage.

    Decrease? A taller tire should give you a slight increase in mpg...

    I have done performance flash before on a VW gti but never thought
    about how you can recalibrate the speedometer digitally.

    If there is one available for your car. Most of the CPM programmers on the market cater to 'performance' oriented cars. If they make one, you can buy
    it from HypeTech and plug it into the Ford's underdash port and reprogram
    some parts of your CPM...you can find them on the internet.

    There is one that I use called HP Tuner. I have it installed on a laptop computer. It has all of the bells and whistles to change the performance aspects of your car (including tire diameters and air/fuel ratios). Dunno
    if they have one for your Ford. Last I heard, their programmer and
    software costs over $500...

    R\%/itt


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  • From Roy Witt@1:218/700 to TOM WALKER on Thu May 30 10:46:30 2013

    TOM WALKER wrote to JIM HAIGHT:

    IF you have a recalibratable Electronic Speedometer check out this
    web site.

    http://www.autometer.com/tech_faq_answer.aspx?sid=2&qid=40

    If you look at the picture, this is for an AUTO-METER electronic speedo. I doubt if that will do him much good.


    R\%/itt


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  • From Jim Haight@1:218/700 to TOM WALKER on Thu May 30 18:48:54 2013
    Re: Software

    IF you have a recalibratable Electronic Speedometer check out this web
    site.
    http://www.autometer.com/tech_faq_answer.aspx?sid=2&qid=40

    Interesting... will have to check the manual for this one as I have no idea
    if it will work for my car.

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  • From Jim Haight@1:218/700 to Roy Witt on Thu May 30 19:10:25 2013
    Re: Software

    The springs will have nothing to do with the tire diameter or your speedo error.

    Yes I didn't mean to give that impression but was perhaps unclear. Also, I
    was probably brain dead after work... the tire size I meant to post was 245x75x16. On the Ford Escape Forum (escape-city.com) most folks say that
    this tire fits with the advantage of giving a bit more ground clearance. I
    have read much argument about changing suspension geometry on a car with Independant suspension and the advantage of a taller tire helps decrease the angle of the half shaft into the bearing, especially after raising the car up
    a bit.

    as for programs, the SCT X3 flash has good reviews for FORD. My car is
    actually a Mazda however... don't really think there is anything FORD on it except the badge and the faux Explorer front end.

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  • From TOM WALKER@1:218/700 to JIM HAIGHT on Sat Jun 1 07:59:00 2013

    as for programs, the SCT X3 flash has good reviews for FORD. My car is JH>actually a Mazda however... don't really think there is anything FORD on it JH>except the badge and the faux Explorer front end.

    Actually I believe it is the other way around. The Mazda Tribute is
    really a Ford built in St Louis.
    Some years back the Little Ford Courier(1972-1993) was just a Mazda
    rebadged. Becasue of the "Chicken Tax" in 1994 the situation was
    reversed.
    The Ford Ranger became the Mazda Pickup.

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  • From Jim Haight@1:218/700 to TOM WALKER on Mon Jun 3 05:50:06 2013
    Re: Software

    Actually I believe it is the other way around. The Mazda Tribute is
    really a Ford built in St Louis.

    According to Wikipedia:
    2001-2006 Japan
    2007-2012 Claycomo, Missouri

    Interestingly on the 626 Platform. A 626 on stilts!

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  • From TOM WALKER@1:218/700 to JIM HAIGHT on Wed Jun 5 15:16:00 2013
    Actually I believe it is the other way around. The Mazda Tribute is
    really a Ford built in St Louis.

    According to Wikipedia:
    2001-2006 Japan
    2007-2012 Claycomo, Missouri

    Interestingly on the 626 Platform. A 626 on stilts!

    I noted you perfered the Ford Front end. Interestingly I liked the
    Mazda front end better.
    BUT Ford has made the 2014 Tribute Double Ugly. do a google search and
    take a look.
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  • From TOM WALKER@1:218/700 to JIM HAIGHT on Wed Jun 5 15:24:00 2013
    Actually I believe it is the other way around. The Mazda Tribute is
    really a Ford built in St Louis.

    According to Wikipedia:
    2001-2006 Japan
    2007-2012 Claycomo, Missouri

    I got my data form Wikipedsia also. In checking I see where the St
    Louis plant was Closed in 2006 and demolished started in 2010.
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