Uploaded August 2026 | Updated September 2026, 2 weeks ago
Why do car brake discs have holes in them?
In this video, we take a closer look at what happens when a car brakes, how friction creates enormous amounts of heat, and why controlling that heat is so important. We'll also explore what the holes actually do at the contact point between the brake pad and disc, why engineers can't simply keep adding more holes, and how drilled, slotted, and plain brake discs differ.
Timestamps:
0:03 - Intro
1:01 - What Happens When You Brake
1:55 - Brake Disc Cooling
2:53 - Why the Holes Matter
3:49 - What Happens Between the Pad and Disc
4:43 - Why Not Add More Holes?
5:41 - Drilled vs. Slotted vs. Plain
6:42 - Conclusion
#simplethings #brakediscs #carbrakes #howcarswork #automotiveengineering #engineering #carfacts #brakerotors #cars #rotor #brake #brakes #wheels
Why do car brake discs have holes in them?
In this video, we take a closer look at what happens when a car brakes, how friction creates enormous amounts of heat, and why controlling that heat is so important. We'll also explore what the holes actually do at the contact point between the brake pad and disc, why engineers can't simply keep adding more holes, and how drilled, slotted, and plain brake discs differ.
Timestamps:
0:03 - Intro
1:01 - What Happens When You Brake
1:55 - Brake Disc Cooling
2:53 - Why the Holes Matter
3:49 - What Happens Between the Pad and Disc
4:43 - Why Not Add More Holes?
5:41 - Drilled vs. Slotted vs. Plain
6:42 - Conclusion
#simplethings #brakediscs #carbrakes #howcarswork #automotiveengineering #engineering #carfacts #brakerotors #cars #rotor #brake #brakes #wheels
