Pneumatic tire with tread having {HEAD ~ see through main groove} with amplitude, {TAIL ~ blocks} and sub grooves 
Pneumatic tire with tread having { HEAD ~ see through main groove } with amplitude , { TAIL ~ blocks } and sub grooves
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH