Programing for bigger tires - Jeep Commander Forums: Jeep Commander Forum
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post #1 of 4 (permalink) Old 03-09-2012, 09:15 AM Thread Starter
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Programing for bigger tires

So i have the 2" RC lift and running 245/75/17's what would i program on my fashpaq for the bigger tire correction?


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post #2 of 4 (permalink) Old 03-09-2012, 10:45 AM
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You have to actually measure and see how tall your tires are and program that number into the Flashpak. My 265/70's measured out to be approx 30.5 inches tall. So thats the number i programmed.




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post #3 of 4 (permalink) Old 03-09-2012, 11:19 AM
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My 255/65R17's came in at 28.75. You have to program the loaded diameter of the tire, not the unloaded diameter from the specs.

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post #4 of 4 (permalink) Old 03-10-2012, 08:28 PM
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Quote:
Originally Posted by rwmorrisonjr View Post
My 255/65R17's came in at 28.75. You have to program the loaded diameter of the tire, not the unloaded diameter from the specs.
Are you refering to measuring the tires while mounted on the vehicle with the weight on it? If so thats how I measured mine. My tires are a lit bigger then yours though. I did two different methods of figuring the diameter of my tires. One was by just simply measuring the height from the ground up. The second was a rolling diameter which takes a little math to figure out. I came up with the same number for both.




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