Plain or Grooved rotors

Assuming everything else equal, are grooved discs worth the extra cost?
What do people prefer?
Thanks, Gregg
What do people prefer?
Thanks, Gregg
Carrying on from \"The Works Escorts\" forums of years past, RS Motorsport is dedicated to those small Fords from the Golden Era of Motorsport, namely the 60's, 70's and 80's.
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http://www.rsmotorsport.com.au/forums/viewtopic.php?f=15&t=3863