It's generally understood that the squeal is the minute grains of dust being rolled/squeezed as the drum drags them over the shoe surface. The diagonal grooves, helped to give an escape for those grains. I've applied this idea to disc brake pads with success. Ray On Apr 7, 2009, at 11:50 PM, George Riehl wrote: . Put everything back togeather, never a sound from then on. Why did it work? Your guess is as good as mine. All right folks, time's awasting! This Meet will be a good'un, don't miss it! So lets get those Meet Registrations in soon, give poor Gloria a break and don't wait 'til the last few days. OK, the last few days are here, NOW. [Non-text portions of this message have been removed] ------------------------------------ To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm For archives go to http://www.forwardlook.net/300-archive/Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Chrysler300/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/Chrysler300/join (Yahoo! ID required) <*> To change settings via email: mailto:Chrysler300-digest@xxxxxxxxxxxxxxx mailto:Chrysler300-fullfeatured@xxxxxxxxxxxxxxx <*> To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/