Identifying your Sentra's rear brake setup
- Disc brakes behind the rear wheels feature a visible rotor and a caliper clamped to a metal rotor; you typically see a caliper through the wheel spokes.
- Drum brakes hide a wheel drum behind the wheel, with no exposed rotor; you’ll typically see a solid drum and may need to remove the wheel or drum cover to inspect the shoes and backing plate.
- For precise confirmation, check the owner's manual, the VIN-based build sheet on Nissan's site, or ask a dealership parts department with your VIN.
Maintenance implications
- Identify the braking type using the method above (disc vs drum).
- If you have rear discs: inspect pad thickness regularly; replace pads in pairs when they reach the minimum thickness (typically around 2-3 mm, per manufacturer spec); have rotors resurfaced or replaced if they are scored or warped.
- If you have rear drums: inspect the drum for scoring and the inner surface for wear; replace or adjust shoes when the lining is worn to the minimum (often around 2-3 mm) and service the wheel cylinder if leaking.
- Bleeding and fluid checks: ensure brake fluid is clean and at recommended levels; replace fluid as recommended (often every 2-3 years) since old fluid can reduce braking efficiency.
Signs your rear brakes may need service
- Squealing or grinding noises when applying the brakes.
- Soft or spongy pedal feel, or longer stopping distances.
- Pulling to one side during braking or a vibration in the pedal or steering wheel.
- Visible rotor wear (on discs) or unusual drum scoring (on drums).
- Brake warning light on the dashboard or indicators of reduced braking performance.
Summary
The Nissan Sentra does have rear brakes, but whether they use pads depends on the generation and trim. Front brakes are typically discs across most trims, while the rear axle can be either discs with pads or drums with shoes. Check your VIN, owner's manual, or ask a dealer to confirm the exact setup for your car and follow the appropriate maintenance schedule for discs or drums.