Tire/Rev help on SCT X2 - Ford Powerstroke Diesel Forum
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post #1 of 5 Old 12-27-2008, 01:08 PM Thread Starter
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Tire/Rev help on SCT X2

I just went from 265/75/16's to 285/75/16's and was wondering if I need to change my revs. It seems to shift quicker into 4th and feels like a dog.
How do I figure how many I should go up, Is there a way to calculate.

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post #2 of 5 Old 12-27-2008, 01:11 PM Thread Starter
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I think I found it but someone chime in. 285/75/16 should be going 614.7 revs per mile.
Should I change my SCT from 500 to 614?

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post #3 of 5 Old 12-27-2008, 01:13 PM
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Try this:
Tire Size Calculator

It will get you in the ballpark!


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post #4 of 5 Old 12-27-2008, 01:13 PM
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614.7 is correct. The SCT only goes up in increments of 5 as far as user adjustability. Set it to 615

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post #5 of 5 Old 12-27-2008, 01:16 PM Thread Starter
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