Tire having optimum characteristics for the ride comfort of a vehicle

A tire for a wheel of a vehicle comprising a tread strip, shoulders, sidewalls, beads provided with cores and bead fillers, a carcass and a belt structure comprising belt plies, where said tire and tread strip are representable respectively by a dynamic rigid-ring tire model and a brush model with concentrated parameters comprising dampenings concentrated parameters and stiffness concentrated parameters,

• said tire having construction features substantially functionally equivalent to said dynamic tire model concentrated parameters that, determined under a vertical load ranging from 200 kg to 650 kg, fall within the following intervals corresponding to preselected indices of comfort:
• rb=100-300 (Ns/m)
• rbt=2-40 ((Nms/rad)
• rcz=100-350 (Ns/m)
• rct=10-90 (Nms/rad)
• Ckx=18,000-70,000 (N)
• wherein rb is a radial foundation dampening of said dynamic tire model;
• rbt is a torsional foundation dampening of said dynamic tire model;
• rcz is a residual radial dampening of said dynamic tire model;
• rct is residual torsional dampening of said dynamic tire model;
• and Ckx is a slipping stiffness of said brush model of said tread.