What are the advantages of cross drilled and/or slotted rotors?
Pretty much just for better looks these days. Originally, the cross drilling and slotting was for releasing gases that built up as the pad scrubbed across the rotor… the pad could actually “hydroplane” on this layer of gas above the rotor. As a side benefit, the holes also helped with cooling. But as with many early technical problems, the myths die hard. Fact is, with modern pad and disc materials and surfaces, none of these factors are really a problem anymore. Exception: bargain brand brake products. Stay with genuine Honda/Acura parts or other reputable, high-qualty OEM-equivalents and you shouldn’t have any brake problems. Also, cross drilled rotors are prone to cracking under unusually high heat. Not good. Return to “Performance” Top Can I compute Horsepower from timed track results? If you know the vehilcle’s weight and either its mph or elapsed time in a standing-start quarter mile, these equations, from Road & Track magazine, should get you within 5% or so. HP = weight (ET 5
