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