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88 LE,
The main reason people x-drill is to aid in venting, and to clean the pads so glazing is decreased. Yes, there is something to be said about too many holes as well. Under extreme conditions, (Porsche owners can testify to this) these rotors can fracture. If you really want to lighten rotating weight, this is another way of doing it! :smile:
The best is to slot the rotors. This cleans the entire pad on every sweep. It's more effective than x-drilled but does nothing for cooling.
For the fronts, I think some x-drilling and slotting is best. For the rears, I'd just stick with slotting unless you want to swiss cheese it or rice it up!
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SE V6
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