[wait4me]

Ok your problem is because you changed the rear tire size and now it is tooo far off from the front to rear and that is why the system thinks you are loosing traction. Stability control is not kicking in, just traction control.

Stock tire size for the front is, 255 - 40 - 19 which is exactly 746.10 revolutions per mile and 84.92 inches in curcumference.
Stock tire size for the rear is, 285 - 35 - 19 which is exactly 751.02 revolutions per mile and 84.37 inches in curcumference.

That is releatively close in terms of pulses per mile so they have it probably set up to be very close and just allow a little bit of slop before it will start seeing the difference and will start thinking it is loosing traction. Obviously they have to set that "GAP" to never happen in 200 mph. Because the faster you go, the more the difference between the front and rear tire pulses will be.

Now, your new rear tire size is messing with you.

The tire size you now have being 285 - 40 - 19 is 720.9 revolutions per mile. Way off in terms of pulses per mile of the wheel abs sensors. They will be close till about 28mph and still within range, but then as you go past that point, it will start to be too far off from the safe zone and will then think you are loosing traction on the front 2 tires.



Changing the tire size in the computer will not fix your problem i dont think. It would be an abs adjustment, and by changing this to fix your error would result in LESS than ideal traction control when you change your tires back to the summer ones..