good point ... that's why the TC used to kick in when you take of with the steering fully one side... cos it's below 10mph then and the system is still under self check
MY concern with different tyres is the brakeing action not the TC cos the TC is disabled for individual wheel controll above 31.3mph
the ABS action is exptremely complex and it has a special control algorithm named MIC = Modified individual control, for all the vehicles where WABCO system is used the threshold and refference values are calibrated for that specific vehicle based on the builder's data...these figures were not made public by WABCO in any document(and i've seen many)... they explain the operation mode with graphs and if you have engineering knowledge seeing those schemes you can presume that the limits are quite tight...from my tests and readings i can estimate that a signal difference up to 5-10% decreasing with speed is accepted by the system as to not throw sensor signal fault codes... otherwise while braking every input is taken into account by the system that's why you'll not find two D2s to stop EXACTLY on the same distance on the same surface unless ALL the elements are EXACTLY similar(weight, wheel size/profile/pressure/wear, pressure applied on the pedal/in the system...and so on and on)...in the figure attached(from official WABCO document) the difference between -b and +b in the middle scheme is 10%(for D2 based on some of my calculations cos for other cars it might be different), i can't attach the whole file here cos it's too large
