hello guys
2018 RAM with 5700 V8 A/T
FCA changed the BCM software, and looks tricky to adjust the speedometer for taller tires..
we install several 4" lift kit with 35" tall tires...
on all vehicles including the 2017 model year I can easily do it...
but no way to do it on 2018...

doyou have any idea or suggestion on how do it???

thank you so much
best regards