Join Date: Apr 2007
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This is from experiance. They do not have the braking power that a standard rotor with upgraded pad will give you. You may be giving up to 30% of the surface area on your rotors. And they eat up pads faster. It has been proven time and time again. The only way the sloted/drilled rotors are usefull are in extreme braking conditions were heat is built up very fast. I like to get out and autox and all do not use slotted/drilled rotors. Only good for track day cars.
On a truck they would be useless. You are better off finding a more agresive pad. Not those dust free pads, there usualy the least agresive. And slaping them on standard rotors. That will give you the max brake surface area and a more agresive pad. That can take full advantage of every sq in. that the rotor has to give.