Carlyle Racing 15-Inch or 17-Inch Rear Brake Conversion Kit

Carlyle Racing brake conversion kits are designed primarily to facilitate the use of smaller diameter wheels, such as 15-inch or 17-inch drag wheels, which are essential for mounting tires with larger sidewalls for improved drag racing traction [1.1.2, 1.2.1].

Key Differences & Applications

• 15-Inch Conversion Kits:

  • Purpose: These kits replace the larger OEM rear brakes (which often prevent smaller wheels from fitting) with lower-profile calipers and smaller diameter rotors [1.1.1].

  • Common Applications: Widely available for vehicles including the Chevy Camaro (2010–2021), Pontiac G8 (2008–2009), Chevy SS (2014–2017), Cadillac CTS-V (2015–2019), Cadillac ATS-V (2016–2019), and C5/C6/C7 Corvettes [1.1.1, 1.3.1, 1.3.3].

  • Components: Typically include Wilwood four-piston calipers, rotors (solid or drilled/slotted options), and necessary hardware [1.1.1, 1.1.4, 1.3.3]. Many kits also include or recommend specific rear suspension components (such as adjustable toe arms or spindles) to ensure proper fitment and alignment [1.1.1, 1.3.3].

• 17-Inch Conversion Kits:

  • Purpose: These allow for a 17-inch drag tire package while maintaining sufficient brake clearance [1.2.1]. They are generally less invasive than 15-inch kits and are often chosen for performance builds that do not require the smallest possible wheel diameter [1.2.1].

  • Common Applications: Frequently utilized for C7 Corvettes (2014–2019) [1.2.1, 1.2.3].

  • Features: Like the 15-inch versions, these kits often feature lightweight billet aluminum 4-piston calipers and are designed to retain the factory parking brake functionality [1.2.1].

Important Considerations for Installation

• Parking Brake: Most Carlyle Racing kits are engineered to retain the functionality of the OEM parking brake [1.1.1, 1.2.1, 1.3.3].

• Suspension Geometry: Converting to 15-inch wheels may require modifications to the rear suspension—such as using low-profile toe rod bolts or aftermarket control arms—to clear the wheel and tire package [1.1.1, 1.3.3].

• Alignment: An alignment is typically required after installation, especially if suspension components are replaced or shimmed to achieve the correct camber [1.3.3].

• Clearance: While these kits improve wheel clearance, you should always verify fitment with your specific wheel brand, as some 15-inch or 17-inch wheel designs may still have clearance constraints depending on their internal barrel shape [1.1.1].