base model: 225/50R18 245/45R18 = 0.66%
sport model: 245/40R19 275/35R19 = 0.52%
nismo: 245/40R19 285/35R19 = 0.51%
abs/tc is kicked in when the front wheels are spinning at a difference speed than the rear. Has nothing to do with the relationship to the original wheel size
afaik