{TAIL ~ The tread} 12 is of any rubber tread compound having {HEAD ~ a relatively low energy loss} during stress cycles and being durable against wear, abrasion and aging 
{ TAIL ~ The tread } 12 is of any rubber tread compound having { HEAD ~ a relatively low energy loss } during stress cycles and being durable against wear , abrasion and aging
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH