determining {HEAD ~ a second aligned toe angle} of {TAIL ~ the second wheel} relative to a second reference point, 
of
determining { HEAD ~ a second aligned toe angle } of { TAIL ~ the second wheel } relative to a second reference point ,
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH