Dont try this at home kiddies. :chairshot:
Seriously, if you want to test the limits, do it somewhere like in an empty parking lot or something. When I first tried the VDIM disable I went to a little used shopping center, checked the lot for any hidden obstacles and then did some donuts, just to get a feel for how the car would handle.
Hapless kids that have goosed their IS300s too hard on wet on ramps have ended up crashing into guard rails and stuff and messing up their nice cars. Then they make posts wondering why they couldn't take the on ramp at the same speed they did when it was dry. Others have hit a patch of oil or a little gravel that wasn't there before and ended up in the weeds or worse. IOW, don't try any of this stuff on a public road.