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Old 10-08-2006, 12:44 PM   #1
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Join Date: Feb 2005
Location: Chicago
Posts: 283
Grooved Pads and Rotors...Cause???

Replaced the front pads and rotors on my 2000S. Super easy BTW. Anyhow...the old pads and rotors have very deep grooves cut into both the front and back sides. Just curious...what causes such a phenomena?
2000 Porsche Boxster S
2007 Lexus RX350
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