Brake Calculator
Check brake disc thickness against the minimum, get pad wear alerts and estimate the full cost of a brake job including discs, pads and labor.
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Discs and pads wear differently
Brake pads are typically replaced at 3 mm of friction material, discs when they reach the minimum thickness stamped on the hub (often 2 mm below new). Pads last roughly 30,000–50,000 km; discs often twice as long.
- Always measure with a micrometer, not by eye
- Replace discs in pairs (both sides of an axle)
- Worn discs cause pulsing under braking
- A warning light or a grinding noise means immediate attention
FAQ
When the measured thickness is at or below the minimum stamped on the disc, when there are deep grooves or cracks, or when there is visible run-out causing judder.
New pads have about 10–12 mm of material. Replace them at or before 3 mm to protect the discs and keep braking performance.
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