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Adjusting ECM for larger wheels and tires question

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Old 07-09-2013, 11:27 AM
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Adjusting ECM for larger wheels and tires question

Hey guys -

I haven't been on for a while, but I recently sold my 2006 and ended up with the 2013 that's in my signature now. I had it lifted shortly after buying it and have only had for about 1500 miles now. I forgot how far off the larger wheels and tires throw off the speedometer (and I assume mileage). The 2006 I had was rolling larger wheels and tires as well, but I bought a Smarty for it and changed the settings to account for the larger wheels and tires. Problem is that I don't think there are any programmers available for the 2013 trucks (and who knows if there will be). Does anyone know if a dealership can do this or have a suggestion on how to get this accomplished? I need to take the truck in to have the dealership look at a couple minor things anyway, but wanted to check with the folks on here and see what options exist for getting the ride speedometer and odometer readings. Any suggestions? Thanks!

Thomas
Old 07-16-2013, 07:44 PM
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It is my understanding the dealer can flash it for the larger tires.
Old 07-16-2013, 11:16 PM
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Dealer in my town said $125 to hook up the computer and adjust the tire size. So yes a dealer can do it.
Old 07-19-2013, 12:49 PM
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Check first before you pay anything. IF it can be adjusted by the dealer, it's usually not by tire size, but by revs-per-mile.
Old 07-20-2013, 07:57 PM
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I plugged my old bully dog triple dog into my 12 and it had all the options that's old 5.9 had in 07. I turned off my daytime running lights and seatbelt reminder and the tire option was there as well.
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