Cooper Tire & Rubber Co. has added 30 sizes to the Discoverer SRX line for SUVs and CUVs. The company launched the Discoverer SRX line in six sizes in 2014. Cooper says the Discoverer SRX features a new silica-based tread compound, combined with patented Stabiledge technology and 3D Micro-Gauge siping, which deliver more road surface grip for increased traction in various weather conditions. The Discoverer SRX also features Cooper's innovative Wear Square, an exclusive visual indicator of the tire's remaining tread life built into the tread design. The Discoverer SRX has a 65,000-mile tread wear protection warranty.