Everything has been calibrated for the larger tires. My Jeep has done this since around 1k miles or so so calibration isn't the problem. It is less noticeable with the larger tires since the engine is a bit more sluggish spinning the heavier rubber to begin with. I think I am going to use the Superchips to log the O2 to see if I can see any spikes or dead zones.

Like I said before, I would love to just take the Jeep to the dealership and have them drive it all over the place for a week and they would notice it. Problem is, I would need a loaner car and no dealerships within a 100 mile radius offer cars.

 

Man It sounds like the ESP. I would do like the other guy suggested and disable it. I disabled mine yesterday.