i think the balo rotors go for 60 bucks a set on ebay. but i know a shop that would turn them for free so i was gonna see how long i can ride these rotors till i need to change them.

right now the passanger front rotor has grooves in them, shake and squeal when stopping. i don't think they are warped as i have inspected them before.

this is for a W126 300SD BTW.

so i suppose what i need to know is after turning them how much life can i expect. rephrase = how fast do these rotors wear down with OEM pads. i don't want to be turning them and wearing them down to the unsafe limit in 2-3 month. is there a general idea on how much 1mm would last assuming i don't use the brakes on a race track. since i bought this car about half a year ago i couldn't keep track on how old the rotors were and when they were changed, please help me out on how long your rotos typically last.

thanks guys

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198? 300D ???K - Future DD
1989 300TE 285K - traded in '12
1984 300SD 186K - Sold in 08
1978 300SD 330K - Died in 05