| 摘要 |
A brake disk or rotor, a brake system and a vehicle having a brake system wherein a circular-shaped disk comprises a first contact surface (1) and a second contact surface (2), and at least two wear-indicating recesses (31, 32) wherein the first recess (31) is positioned at a distance in accordance with a first brake disk radius (R) and a second recess (32) is positioned at a distance in accordance with a second brake disk radius (R') and wherein at least two recesses (31, 32) are arranged asymmetrically in relation to said disk.
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