TOYOTAD BRAKE DISC

Grey Cast-Iron G3000 – manufactured to TOYOTAD OE drawings for exact fit and original pedal feel.

Cast, machined and 100 % checked in an IATF-16949-certified foundry.

1. TRUE OE GEOMETRY

– CNC-turned outer Ø, thickness and bolt circle match TOYOTAD blueprint—installs without shims or spacers.

– Hub pilot and ABS tone-ring window held to ± 0.02 mm—zero run-out, no warning lights.

2. GREY CAST-IRON G3000 SPECIFICATION

– 3.3 % C, 2.0 % Si, 0.7 % Mn, ≤ 0.15 % P, ≤ 0.12 % S—same chemistry used on Corolla, Camry, RAV4 production line.

– Pearlite matrix, 200-230 HB hardness: excellent wear resistance, thermal conductivity and noise damping.

3. HIGH-EFFICIENCY VENTILATED CORE

– 40 swept vanes increase airflow 15 %, dropping rotor temperature 60 °C in repeated 100-0 km/h stops.

– Single-piece casting—no welded seams to crack under rally-grade thermal cycles.

4. SURFACE FINISH & DYNAMIC BALANCE

– Non-directional swirl, Ra ≤ 1.8 µm—pads bed-in within 20 city stops, no greenfade.

– Balance corrected to ≤ 1 g—steering-wheel shake free at TOYOTAD’s 130 km/h highway test.

5. CORROSION RESISTANCE

– Electro-zinc plating on hat, outer rim and vane mouths—96 h salt-spray per ASTM B117, no rusty hats behind alloy wheels.

– Friction faces uncoated for immediate use; protective oil film burns off on first application.

6. QUIET, LOW-DUST DESIGN

– Radial & lateral chamfers plus 0.35 mm under-cut slots prevent pad-knock and squeal.

– Optimised for TOYOTAD low-met and ceramic pads—keeps wheels cleaner than drilled alternatives.

7. VALIDATION TESTS

– 300-cycle AK-Master (100-30 km/h, 3.5 kW power) wear ≤ 0.35 mm—inside TOYOTAD 0.5 mm limit.

– Thermal shock: 500 °C → 20 °C water quench, 50 cycles—no surface cracks, distortion < 0.05 mm.

8. SERVICE LIFE & FITMENT

– 70 000–90 000 km normal street use; 35 000 km severe duty (taxi, high-speed patrol).

– Direct replacement for selected TOYOTAD models—see reverse for VIN/chassis chart.

– Replace in axle pairs and use TOYOTAD-specified pads for optimum performance.

INSTALLATION TIP

Clean hub flange with wire brush, coat contact shoulders with thin anti-seize, torque wheel nuts to 103 N·m (M12) in star pattern.

Bed-in: 8 moderate stops 80 km/h → 30 km/h with 30 s cooling between each.

TYPICAL FRONT DISC SPEC (17″ wheel)

Outer Ø: 319 mm

Thickness new: 28 mm

Min. thickness: 26 mm

Centre bore: 60.1 mm

Stud pattern: 5×114.3 mm

Weight: 7.9 kg

Material: G3000 grey cast iron, heat-treated

Max run-out: 0.03 mm

Thickness variation: ≤ 0.012 mm

Trust the same grey-iron standard chosen on every TOYOTAD assembly line—restore factory-fresh braking power today.