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