Each of the side wall rubbers covers the packing rubber and extends from the bead part to {HEAD ~ the side wall part} so as to form {TAIL ~ the outside surface} of the tire 
to form
Each of the side wall rubbers covers the packing rubber and extends from the bead part to { HEAD ~ the side wall part } so as to form { TAIL ~ the outside surface } of the tire
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH