The Proxes C1S is designed specifically for premium and luxury sedans and coupes. The Proxes C1S provides sharp steering response, exceptional high speed stability with minimized ride harshness. The combination of the silica re-inforced tread compound and asymmetric tread design provides low tread noise and high levels of cornering grip in wet & dry conditions. The main circumferential grooves utilize Toyo's "Silent Wall" technology to minimize tread noise on smooth surfaces. It has a „Silent Wall” technology of circumferential Groove. It minimizes tread noise (high pitch) on smooth road surfaces. Asymmetric tread design with wide rib at shoulder with twin narrow grooves gives good high speed stability and dry cornering grip. Wide rib at quarter point and narrow groove with dimple results in good dry and wet handling, directional stability and ride comfort. Silica re-inforced tread compound gives high levels of wet & dry grip wit low rolling resistance. The rim protector protects rim flanges from curb damage. It has the wide edge-ply which is the re-inforced shoulder section introduced to reduce high-pitch road noise and optimize cornering performance.