I am "taking over" my wife's green 2020 Telluride EX with tow package. She loves the car but I am getting rid of my minivan and she wants something smaller. I go on MTB trail heads and I would like a little more grip and extra side wall without having to worry about the lift messing up with the self leveling shocks. Would the Falken Wildpeak 255/65/18 fit? Stock is 245/60/18. Does the speedo "auto adjust" to different tire sizes like the Jeeps do?