In contrast to solid rotors, floating rotors have a more complex construction. This difference is brought by the fact that the solid rotors use a dense and strong metallic material that helps in resisting the effects of extreme temperatures. Martin 00015SM Mahogany Guitar, Mahogany, Mortise and tenon So, what's the difference between cross drilled and slotted rotors in the first place? Difference between slotted and solid rotors . Learn about the difference between these types of rotors and the best usage for each. As stated above, drilled rotors are actually cast not drilled into a solid rotor. The next, and most common form of brake rotor, is the vented rotor. This gas and dust reduces the friction force by preventing the pad from fully contacting the rotor. The slots in the rotor allow an. Slotted rotors tend to be used in high performance racing vehicles. One central hub (sometimes called “the hat”) that attaches to the wheel itself, and an outer rotor rin...