J&B Motors

Case Study

Brake System Overhaul

Restoring safe stopping power to a Toyota Hilux with worn brakes and warped discs

Vehicle:Toyota Hilux (2019) — 87,000 km|Duration:1 working day|Cost:$150 – $350

The Problem

The customer complained of a grinding noise when braking, steering wheel vibration at highway speeds, and the brake pedal feeling 'spongy'. They had been putting off the repair for several weeks.

  • Loud metallic grinding noise when braking
  • Steering wheel vibration when braking above 80 km/h
  • Brake pedal feeling soft and spongy
  • Vehicle pulling slightly to the left under braking
  • Increased stopping distance noticed in traffic

Diagnosis

A thorough brake inspection revealed severely worn front brake pads (metal-on-metal), warped front discs, and a sticking rear caliper. Brake fluid was contaminated and well past its service interval.

  • Front brake pads worn to 0mm — backing plates scoring discs
  • Front brake discs warped beyond machining tolerance (0.15mm runout vs 0.05mm spec)
  • Left rear caliper sticking — uneven pad wear
  • Brake fluid contaminated — boiling point below safe threshold
  • Brake hoses front left showing micro-cracking

The Repair

Complete front brake replacement with new discs and pads, rear caliper rebuild, brake fluid flush, and replacement of damaged brake hose. Full system bleed and road test.

  • Front brake disc and pad replacement (genuine Toyota parts)
  • Left rear caliper removed, cleaned, resealed, and refitted
  • Rear brake pads replaced for even wear
  • Front left brake hose replaced
  • Complete brake fluid flush and system bleed
  • Brake system pressure test
  • Road test at various speeds — braking performance verified
  • Final torque check on all brake components

The Result

The Hilux was returned with excellent braking performance. No noise, no vibration, firm pedal feel, and straight-line stopping. The customer was thrilled with the difference.

  • Zero noise — smooth, silent braking restored
  • No vibration at any speed — discs running true
  • Firm, responsive brake pedal feel
  • Straight-line stopping — no pulling
  • 6-month / 10,000 km warranty on all brake work

Turnaround

1 working day

Cost Range

$150 – $350

Warranty

6 Months

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