Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DBβ LIVE
HOMESERVICE MANUALSCHEVROLET2018SONIC PREMIER, 4D SEDAN, STANDARD TRANSREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 249 (DISC BRAKE SYSTEM)SPECIFICATIONSDISC BRAKE COMPONENT SPECIFICATIONS
2018 Chevrolet Sonic Premier, 4D Sedan, Standard Trans
Disc Brake Component Specifications
2018 Chevrolet Sonic Premier, 4D Sedan, Standard TransSECTION Disc Brake Component Specifications
WARNING: This page is about a different car, the 2018 GMC Canyon and 2018 Chevrolet Colorado. However, it is still accessible from the selected car via links, so may be relevant.
| Application | Specification | |
|---|---|---|
| Metric | English | |
| Front Brakes | ||
|
310.0 mm | 12.20 in |
|
25.0 mm | 0.98 in |
|
0.05 mm | 0.002 in |
|
1.50 mm | 0.059 in |
|
0.006 mm | 0.00024 in |
|
27.0 mm | 1.07 in |
| Rear Brakes | ||
|
324.0 mm | 12.76 in |
|
16.5 mm | 0.650 in |
|
0.05 mm | 0.002 in |
|
1.50 mm | 0.059 in |
|
0.006 mm | 0.00024 in |
|
18.0 mm | 0.709 in |
| *All brake rotors have a discard dimension cast into them. Replace any rotor that does not meet this specification. After refinishing the rotor, replace any rotor that does not meet the discard thickness specification. | ||
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.