Front Rotors purchased on Amazon warped in under 5,000 miles/3 months of normal highway and city driving conditions. Issue caused high vibrations in front end when braking from 40+ mph. Paired with new Wagner OEX pads when installed. Manufactureras Warranty period was 24,000 miles/2 years. Rear rotors also warped about 1,000 miles after front rotors did. Front rotors were turned/resurfaced at about 3,000 miles and warped again within 1,000 miles. Replaced with Raybestos high carbon steel rotors and ceramic pads and no issues since replacement (over a year). Wagner did not offer replacement equipment under warranty and Amazon offered only partial refund after return and restocking fees.