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GR Supra MkV A90/A91 Brakes FAQ
A90 3.0/3.0 Premium / A91 Front rotors: 348x36mm (13.7x1.4"), directional ventilated, plain, 2-piece non-floating
A90 3.0 Premium / A91 Rear rotors: 345x24mm (13.6x0.94"), non-directional ventilated (pillar vanes), plain, 2-piece non-floating
Front: Brembo 4 piston fixed aluminum calipers. Piston size: 40mm x 2, 44mm x 2. External dust boot
Rear: Mando single piston sliding calipers. Piston size: 44mm
348mm Front rotor: 28.8 lbs / 13.1 kg (per rotor)
345mm Rear rotor: 16.7 lbs / 7.6 kg (per rotor)
Front caliper: 9.2 lbs / 4.2 kg (per caliper, w/o pads)
Rear caliper: 13.2 lbs / 6 kg (per caliper, w/o pads, w/ parking brake actuator)
Front brake pads: 8 lbs / 3.6 kg (axle set)
Rear brake pads: 3.1 lbs / 1.4 kg (axle set)
Front rotor (left): 43516-WAA01
Front rotor (right): 43512-WAA02
Rear rotor: 42431-WAA01
Front pads: 04465-WAA01
Rear pads: 04466-WAA03
Front caliper (left): 47750-WAA05
Front caliper (right): 47730-WAA05
Front caliper seal and dust boot kit: 47741-WAA01
Rear caliper (left): 47823-WAA04
Rear caliper (right): 47813-WAA04
Rear caliper seal kit: 47737-WAA03
Brake master cylinder: 47201-WAA01
Rotors should be replaced when they are close to, or have reached the minimum thickness. Rotors that are too thin will not work as designed due to the inadequate mass/thermal capacity.
Front rotor thickness: New: 36mm (1.42"). Service limit: 34.4mm (1.35")
Rear rotor thickness: New: 24mm (0.94"). Service limit: 22.4mm (0.88")
NOTE:
• Always replace both discs (left and right) as a set
Depending on the intended use, personal preference, and budget, the following options are available:
• Pads with higher effective temperature range/fade resistance + high temp brake fluid: the most cost effective way to prep the vehicle for track. Recommended: Paragon P3/R5 front pads, P3/R5 rear pads, Castrol SRF brake fluid
• High performance floating 2-piece rotors + track pads + brake fluid: a significant upgrade from the stock setup. Will last longer and outperform OEM brakes in all aspects. Recommended: Paragon front and rear 2-piece rotors + track pads + high temp fluid
• Front big brake kit + floating 2-piece rear rotors + race pads + brake fluid: ultimate track/race performance. The OEM Brembo front calipers are not designed for heavy track use, and there are certain limitations for example the rotor size and longevity of the calipers. Recommended: Paragon Track Performance front BBK
* Stainless steel braided brake lines and titanium pad shims can be added at any point
Front and rear rotor flathead retaining screw: 12 lbf-ft / 16 Nm
Front caliper to knuckle E16 bolt: 59 lbf-ft / 80 Nm
Front brake line to caliper fitting: 13 lbf-ft / 17 Nm
Front caliper bleed screw: 13 lbf-ft / 18 Nm
Rear caliper bracket to knuckle E16 bolt: 81 lbf-ft / 110 Nm
Rear caliper to bracket 15mm bolt: 26 lbf-ft / 35 Nm
Rear brake line to caliper fitting: 16 lbf-ft / 22 Nm
Rear caliper bleed screw: 13 lbf-ft / 18 Nm
M14x1.25 lug bolt: 103 lbf-ft / 140 Nm