Dealer update tire size?

[Chili]

I recently swapped my oem 18's for wheels with 275/60r20 tires. So I went from a 32" tire to a 33"

Shifting seems a fuzz "off" and obviously the speedometer is. Can a dealer update this? Do they normally charge an amount or is it a service quickie they can do. My dealer is pretty decent as I bought the truck from them and it's still under 3y.

Just wondering if it's worth pursuing or I should do it another way.

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[SilverPigeon]

If the tyre size is changed, then:
1. The BCM needs to know the new size and
2. the service procedure needs to be run for the PCM to clear all adaptations so that it can relearn the modified conditions and driving behaviour.

Anyone with FORScan can do these things. I don't know what a dealer would charge.

 

[Parthery]

You are better off either getting Forscan, or finding someone local to you that has it, and pay them a few bucks to make the change. It will take 5 minutes to do.

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