Pneumatic tyre.

摘要

A pneumatic tyre having a bead profile which is a curved line in the range of a locus of $and\; a\; locus\; of$ when\; x-value\; is\; varied\; from\; -15.29\; to\; 0.523,\; wherein$ x\; being\; the\; relative\; radial\; distance\; in\; millimetres\; measured\; from\; a\; reference\; point,\; where\; the\; direction\; of\; increase\; of\; the\; x-value\; is\; radially\; inwards\; of\; the\; tyre,\; and\; y\; is\; the\; relative\; axial\; distance\; in\; millimetres\; based\; on\; a\; reference\; point,\; where\; the\; direction\; of\; increase\; of\; the\; y-value\; is\; axially\; inwards\; of\; the\; tyre.\mathop{\mathrm{image}}$$$