[RickMN]

First, did you buy economy rotors? There is a huge problem with a bad champfer on cheap rotors. The angle is wrong and the rotor doesn't sit squarely on the hub mounting surface. That cocks the rotor a bit. You can tighten the lug nuts, but the rotor will ride like a warped record and knock the pads at every revolution.

Wagner, Raybestos, Bendix, NAPA/United offer professional grade brake rotors. If you really want to be sure you're buying quality, only buy rotors that are D3EA certified.

Here's a link to a Raybestos video demo that talks about the differences between economy rotors and premium rotors. After watching it, you'll never buy economy again.

http://www.raybestos.com/wps/portal/raybestos/kcxml/04_Sj9SPykssy0xPLMnMz0vM0Y_QjzKLN_SOD3YFSZnFh8Qbmx jpR2KIGSLEfD3yc1P1g_S99QP0C3JDI8odHRUBD8J2KA!!/delta/base64xml/L3dJdyEvd0ZNQUFzQUMvNElVRS82XzFLX1NF?WCM_GLOBAL_CO NTEXT=/wps/wcm/connect/affinia.websites.content/Training/Learning+Center/raybestos/Some+Like+it+Hot