S550 Ford Mustang Wheels

The S550 supports 19-inch and 20-inch wheels as the most common diameters for street and performance builds. On a staggered setup, the standard configuration is 19x10 or 20x10 up front with a 19x11 or 20x11 out back. Square setups typically run 19x10 or 20x10 on all four corners. All of these fitments are verified for the S550 platform at the offsets published on this page.

All 2015-2023 S550 Mustangs use a 5x114.3 bolt pattern (also written as 5x4.5 inches). This applies to every trim in the production run, including the GT, EcoBoost, V6, Mach 1, and Bullitt. Lug hardware is M14x1.5, and the factory-recommended torque spec is 93 ft-lbs.

The S550 Mustang uses a 70.5mm center bore. Project 6GR wheels are machined to this exact measurement, making them a true hub-centric fitment. No centering rings or adapter hardware are needed.

Staggered runs a wider rear wheel than the front — typically 19x10 or 20x10 up front and 19x11 or 20x11 out back. It gives the car a more aggressive visual stance and can improve rear traction on high-power builds, but it does not allow front-to-rear tire rotation. Square runs the same size on all four corners, which enables tire rotation, produces more neutral handling under lateral load, and is the standard choice for track and road course use.

Yes. Every S550 fitment on this page is verified for clearance with the factory Brembo front brakes on Performance Package GT models. No spacers, no modifications, and no changes to the brake hardware are required. If your car has an aftermarket big brake kit, contact the team directly to confirm clearance for your specific application.

Spun Forged (also called flow formed) starts with a cast aluminum blank that is spun and formed under high pressure while heated. The process compresses the barrel material, producing a wheel that is lighter and structurally stronger than a conventional cast wheel. Monoblock Forged is machined entirely from a single 6061-T6 aluminum billet with no casting step — one continuous piece, no welds, no seams. Monoblock Forged is the higher-performance option and carries a higher price point. Both constructions are available for the S550 platform.

Yes. Project 6GR wheels are designed to accept the factory Ford TPMS sensors that came on the S550 from the factory. No sensor replacement or additional hardware is required.

Yes. The verified offsets published on this page are compatible with common lowering spring and coilover configurations running a standard to moderate drop. For builds running aggressive suspension drops, wide-body body kits, or non-standard brake hardware, contact the team to confirm clearance for your specific setup before ordering.

Project 6GR wheels carry a lifetime structural warranty and a one-year finish warranty. The structural warranty covers manufacturing defects under normal use. Road hazards, improper tire sizing, unauthorized modifications, and damage from incorrect installation or maintenance are not covered. Full warranty terms are available at project6gr.com/warranty.