efore diving into the details of each disc type, it is important to understand the general advantages and disadvantages of drilled and scored brake discs.
Advantages of drilled brake discs
Increased heat dissipation: The holes in drilled brake discs allow for better dissipation of heat generated during braking. This helps prevent overheating.
Improved gas and water expulsion: The holes in the drilled brake discs help to expel gases and water that accumulate between the brake pads and discs. This improves contact between them and ensures more efficient and consistent braking.
Disadvantages of drilled brake discs
Lower resistance to cracking: Perforated brake discs are more likely to crack due to the weakening of the disc due to the holes. This makes them less durable and reliable compared to solid or scored discs.
Increased brake pad wear: Holes in drilled brake discs can wear brake pads more quickly compared to solid or scored discs. This may require more frequent brake pad replacement.
Corrosion sensitivity: Exposed holes in drilled brake discs may be susceptible to corrosion and rust. This can affect their aesthetic appearance and, in extreme cases, compromise their performance.
Advantages of scored brake discs
Improved gas and water expulsion: The grooves in scored brake discs help to expel gases and water that accumulate between the brake pads and discs. This improves contact between them and ensures more efficient and consistent braking.
The grooves clean the brake track of brake pad friction material deposited in the grooves.
Disadvantages of grooved brake discs
Reduced heat dissipation capacity: Unlike perforated brake discs, scored discs do not dissipate heat as efficiently. In heavy and prolonged braking situations, this can lead to an increase in temperature and, potentially, a decrease in braking performance.
Possibility of noise: In some situations, scratched brake discs may generate a characteristic sound during braking. This can be considered a disadvantage for those seeking a quieter driving experience.