Alfa Romeo Forum - View Single Post - Front disc replacement...drilled, slots or std
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AO Silver Member
Join Date: Jan 2018
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Yes, dimpled or blind-drilled (not drilled all the way through) do not have the same tendency to crack.

Aside from looks, the reasons for fitting are for better brake cooling. The reduced area of friction surfaces contacting should mean greater pedal pressure (probably slight). Narrow square grooves work differently to wider rounded grooves. Narrow grooves de-glaze pads better. Wide grooves seem better for wet conditions are are quieter than narrow square grooves.

As my front pads always last over 50k and it is disc condition which drives the change, I've stuck with standard but I have considered a change in the past. I decided to stay standard to try to keep heat in the brakes in winter conditions.
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