2012 F-250 4in lift with 37s question - Ford Powerstroke Diesel Forum
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post #1 of 16 Old 07-21-2013, 11:55 AM Thread Starter
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2012 F-250 4in lift with 37s question

I did a 4 in lift with 37s 20in tires. Should I have the computer recalibrated for the larger tires. I went to the Ford Dealership and they told me they could not do it b/c that size is not in their scan tool. They only have stock sizes in the system. I thought about doing an aftermarket reprogram. But do I need to even do this? The place I purchased the tires and lift kit said i could go with a performance and MPG reprogram but I'm not sure about doing that. What are you guys thoughts on this. I know plenty of ppl have lifted and changed the tires on this truck. I just don't want to have an issue down the road.
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post #2 of 16 Old 07-21-2013, 12:15 PM
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Truck looks great, love the wheels. What lift, wheel & tire combo is that? An aftermarket programmer will be able to recalculate for the tire size, im not sure if its absolutly needed if you can figure out how many mph its off and just be aware of your speed.
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post #3 of 16 Old 07-21-2013, 12:27 PM Thread Starter
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Thanks! BDS suspension lift with Nitto Trail Grabbers. I was just wondering if I did the recal if it would help a little with MPG and also I was wondering with the speedo off if it could be shifting at the wrong times. I haven't heard it shift rough or anything just someone told me that it could be putting a strain on drivetrain and transmission components.
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post #4 of 16 Old 07-21-2013, 01:13 PM
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truck looks great and thanks for posting a pic that's what I am doing to my truck here soon so now I get an idea of what mines going to look like! I'm doing the 4.5 inch lift though!
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post #5 of 16 Old 07-21-2013, 02:01 PM
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Truck looks great! I did a 3.5 lift with 35's but now I'm itching to get some 37's.

2012 F350, Lariat, FX4, CCSB, ReadyLift 3.5" SST, 37" Toyo Mt, BMF Novakanes 20x9's, Firestone air bags, Air-Lift 72000, Rigid D2's

Last edited by cd4899; 07-21-2013 at 02:02 PM. Reason: Typo
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post #6 of 16 Old 07-21-2013, 02:55 PM Thread Starter
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Originally Posted by cd4899 View Post
Truck looks great! I did a 3.5 lift with 35's but now I'm itching to get some 37's.
Thanks!

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post #7 of 16 Old 07-21-2013, 03:05 PM
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Could you give me the size, dimensions and type of wheel that you are using!

2012 F350, Lariat, FX4, CCSB, ReadyLift 3.5" SST, 37" Toyo Mt, BMF Novakanes 20x9's, Firestone air bags, Air-Lift 72000, Rigid D2's
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post #8 of 16 Old 07-21-2013, 03:24 PM
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Not sure what you can use that will give you unlimited range for adjustment. My H&S Mini Maxx only lets me go up to 34.1".

This is also rubbing it in further that I "need" 37" tires to go with my 6" lift...

2011 F-350SD SRW XLT FX4 CCLB: 6.7L PSD, 6R140, 3.55:1 EL, 11500lb GVWR
2009 Tundra SR5 4x2 RCLB¹ 5.7L 4.30:1 (Sold)
Others: 1982 F-250HD 4x2 RCLB 6.9L-IDI // 1988 F-250HD 4x4 SCLB 7.3L-IDI // 1995 F-350HD DRW 4x2 CCLB 7.3L-T444E PSD // 2004 F-350SD SRW 4x4 CCLB 6.0L-VT365 PSD.
¹VIN details are accurate for the linked truck only, YMMV.
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post #9 of 16 Old 07-21-2013, 03:33 PM Thread Starter
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Quote:
Originally Posted by cd4899 View Post
Could you give me the size, dimensions and type of wheel that you are using!
It's an XD series Rim. I'll have to get the dimensions for ya

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post #10 of 16 Old 07-21-2013, 03:34 PM Thread Starter
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Quote:
Originally Posted by TRENT310 View Post
Not sure what you can use that will give you unlimited range for adjustment. My H&S Mini Maxx only lets me go up to 34.1".

This is also rubbing it in further that I "need" 37" tires to go with my 6" lift...
Ok thanks for the good info. Yea kinda wish I did the 6in lift

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