determining a first test toe angle of {HEAD ~ the first wheel} relative to {TAIL ~ a first toe angle reference point} 
determining a first test toe angle of { HEAD ~ the first wheel } relative to { TAIL ~ a first toe angle reference point }
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL