2023 speedometer calibration Hypertech

[sigfla]

Need a bit of help with a 2023 limited. All the info I see is for 2019-2022. Some threads state that Speedo calibration on a 2023 is quirky with any model tool not just Hypertech. I want to go with a 35 inch tire (34.6). Seems that 2019-2022 are good to go as long as you stay under 35 inches. Hypertech tells me I need an inline calibrator to not lose the parking sensors. I asked if keeping it under 35 would work (I could even program 34 even just to get close). Does anyone have a 2023 they have been successful with? I could also try the dealer but I am hesitant to approach them with the request.

 

[Ynottirbo]

I just added 35’s to my truck. I was told the Alpha OBD works. I got the PIN from my dealer. I read it is needed for recalibration of the TPMS and Speedo. Not 100% sure. If anyone in Southern Maryland has done this, please chime in.