Can you adjust the speedometer for the larger tire size?

[doolin64]

Just wondering if there is a calibrator to adjust the speedometer correctly for oversized tires.

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[Swegner99]

I have been watching for this, I haven't seen an aftermarket calibrator yet but you can update the tire circumference with Forscan and it will accomplish the same thing.

 

[Rapid Red]

Do I have to take it to the dealership for this? Wanting to put 18” on stock is the little 245x17” it’s a 2 1/2” difference.

 

[GeauxKing]

My dealership did it when they installed the tires.

 

[Los150]

You can make the changes using FORScan, from what I've read.

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