Wilwood Superlite 6R/ST Front Road Race Kit, 13.06-Inch GT Lug-Drive Rotors, BMW M3 (1995–1999) and Z3 M Roadster (1998–2001)

The front Superlite 6R/ST kit uses dynamically mounted 13.06-inch rotor rings for the listed BMW M3 and Z3 M Roadster applications. Thermlock pistons and BP-35 pads suit sustained competition temperatures; this is a race conversion rather than a standard road replacement. Wilwood Engineering, founded by Bill Wood in 1977, designs and manufactures disc brake systems from Camarillo, California. Its motorsport, street-performance and specialized product range spans calipers, brake rotors, master cylinders, valves, fittings and brake lines. A conversion must be considered as a complete brake system when selecting those parts.

Technical Details

• Manufacturer part number — 140-16005; supplied as one front axle brake kit.
• Rotor dimensions — 13.06 in; 331.72 mm outside diameter; 1.25 in; 31.75 mm thick.
• Rotor material and surface — Spec-37 Iron; vented; GT Slotted; surface finish Plain.
• Mechanical contents — Separate wheel hubs are not included; mounting hardware supplied; spindles not included.
• Rotor mounting hats — Aluminum; Type III Anodize; hat offset 0.550 inches. This is a hat dimension, not the axle offset.
• Caliper finish and port — Type III Anodize; hydraulic inlet 1/8-27 NPT.
• Supplied service pads — BP-35 compound; verify suitability for the intended operating conditions.
• Minimum nominal wheel diameter — 17 in; 431.8 mm; full spoke/barrel clearance must be checked using the installation drawing.
• Hydraulic service calipers — Forged Superlite 6R; 6 pistons per caliper; Forged Aluminium body; radial mounting; Thermlock pistons.
• Hydraulic installation — Braided flexlines are included; master cylinder not included; brake booster not included.
• Cataloged rotor/hat mounting-hole pattern — 5 x 4.75 in; 5 x 120.65 mm bolt circle; cataloged stud-hole clearances 0.610 in; 15.49 mm. The existing hub or axle flange determines the vehicle wheel pattern and stud specification. These rotor/hat drillings do not convert that pattern.
• Flexline reference — Front Line Kit: 220-8799.

Fitment & Compatibility

The application list covers BMW M3 (1995–1999) and Z3 M Roadster 3.2-liter (1998–2001). Retain the documented factory disc spindle and hub arrangement. The hat is cataloged as 5 x 4.75 inches with a 0.550-inch offset; confirm hub registration, lug seating and the complete 17-inch wheel outline using DS1389. Racing pads require operating temperature; extended cold use increases wear.

Use the fitment table below to confirm each model, year, trim and brake-package condition. The stated span does not override an individual application note.

For help checking the installation, contact PMB Performance with the vehicle year and photographs of the existing brakes. Our more than 20 years of parts experience helps identify the details that model names alone cannot settle.

Review the Installation instructions before selecting hardware or checking wheel clearance.

Manufacturer Warning

Applicable to brake pads only. WARNING: This product can expose you to chemicals including Arsenic, Cadmium, Chromium (Hexavalent compounds), Lead, Nickel, Cobalt and Antimony Trioxide which are known to the State of California to cause cancer or other reproductive harm. For more information go to www.p65warnings.ca.gov.