WHEELS WHEEL ACCESSORIES GROUP BUYS CONTACT BLOG
Follow

S550 Mustang Wheel & Tire Fitment Guide


S550-banner.jpg

Vehicle Covered in this Guide
2015-present Mustang

Chassis Introduction
For 2015, the Mustang underwent its first major overhaul in over ten years. Gone are the traditional old school looks and character, replaced by the most refined and modernized Mustang yet. Dubbed the S550 chassis, it is new from the ground up and shares very little with the previous generation. The most notable change was the introduction of the independent rear suspension, making it the first time a mass produced Mustang left the factory with it. Despite the new body work and axles, the S550 shares the same wheel specs as the S197.

Bolt Pattern: 5x114.3 Thread Pitch: M14x1.5mm Center Bore: 70.5mm

 

OEM+ Fitments


Ideal for the driver who wants a no-nonsense direct bolt-on fitment. These fitments are a small step up from stock wheels and tires, and offer a small but noticeable performance improvement.

Square Setups
Recommended for most types of street and performance driving. Allows proper front-to-rear tire rotation to extend tire life & improve handling balance.

  • Front and Rear: 18x9.5” ET35 with 255/45-18 tires
    • Direct fit.
    • 275/40-18 tires may also be used as a direct fit.

Staggered Setups
Maintains stock-like handling characteristics, tires can only be rotated left to right. Maximizes both front and rear tire width.

  • Front: 18x9.5” ET35 with 255/45-18 tires
    Rear: 18x10” ET43 with 275/40-18 tires
    • Direct fit.
    • 285/40-18 tires may also be used in the rear as a direct fit.

 

Performance Street/Track Fitments

These fitments are effective for both performance oriented street cars and weekend track warriors. The suspension type, alignment settings, and tire brand/size can be changed accordingly to work for either scenario.

Square Setups
Recommended for most types of street and performance driving. Allows proper front-to-rear tire rotation to extend tire life & improve handling balance.

  • Front and Rear: 18x10” ET43 with 275/40-18 tires
    • Popular fitment.
    • Direct fit
    • 285/35-18 or 285/40-18 tires may also be used with at least 5mm spacers up front to clear most suspensions.
    • 295/35-18 or 295/40-18 tires may also be used with approximately -2 degrees of front camber and at least 12mm spacers up front to clear most suspensions.
    • Aftermarket suspensions with offset struts can typically bypass spacers. See below. 

  • Front and Rear: 19x10” ET40 with 285/35-19 tires
    • Direct fit 
    • 275/35-19 tires can also be used as a direct fit
    • 295/30-19 or 295/35-19 tires can also be used with approximately -2 degrees of front camber and at least 12mm spacers up front to clear most suspensions. Aftermarket suspensions with offset struts can typically bypass spacers. See below.

  • Front & Rear: 19x11” ET52 with 305/30-19 tires
    • GT350/R friendly
    • Popular fitment.
    • Requires at least -3 degrees of front camber
    • Approximately 25mm front spacers required with most suspensions. Aftermarket suspensions with offset struts can reduce spacer thickness. See below.
    • 295/30-19 or 295/35-19 tires can also be used with at least -2.5 degrees of front camber and at least 20mm spacers up front to clear most suspensions. Aftermarket suspensions with offset struts can reduce spacer thickness. See below. 

 

Staggered Setups
Maintains stock-like handling characteristics, tires can only be rotated left to right. Maximizes both front and rear tire width.

  • Front: 18x10” ET40 with 275/40-18 tires
    Rear: 18x11” ET52 with 305/35-18 tires
    • Direct fit

  • Front: 19x10” ET40 with 285/35-19 tires 
    Rear: 19x11” ET52 with 325/30-19 tires
    • Popular fitment.
    • Direct fit 
    • 275/35-19 front and 295/35-19 rear tires may also be used as a direct fit.

 

Race Fitments

These no-compromise fitments are ideal for dedicated track / race cars. They rely on aggressive negative camber specifications and may require rolled rear fenders to prevent rubbing. Since you'll be using all available real estate under the fender arches to accommodate these wide wheels, coilovers with linear race springs are highly encouraged for inner clearance (JRZ, MCS, Ground Control, AST, Moton, etc.).

Square Setups
Recommended for most types of street and performance driving. Allows proper front-to-rear tire rotation to extend tire life & improve handling balance. All 11” wide wheels with ET52 offset require up to a 25mm spacer on the front. For vehicles with aftermarket coilovers, often times you can run a 20mm. For vehicles that decide to run a true rear coilover, a small rear spacer roughly ¼” may be needed. Vehicles that run a divorced rear setup (like factory), will not require a rear spacer.

  • Front & Rear: 18x11” ET52 with 305/35-18 tires
    • Popular fitment.
    • Requires at least -3 degrees of front camber 
    • Approximately 25mm front spacers required with most suspensions. Aftermarket suspensions with offset struts can reduce spacer thickness. See below. 
    • 295/35-18 or 295/40-18 tires can also be used with at least -2.5 degrees of front camber and at least 20mm spacers up front to clear most suspensions. Aftermarket suspensions with offset struts can reduce spacer thickness. See below. 
    • 315/30-18 tires can also be used with at least -3.5 degrees of front camber and at least 25mm spacers up front to clear most suspensions. Aftermarket suspensions with offset struts can reduce spacer thickness. See below. 

  • Front & Rear: 19x11” ET52 with 305/30-19 tires
    • GT350/R friendly 
    • Popular fitment.
    • Requires at least -3 degrees of front camber 
    • Approximately 25mm front spacers required with most suspensions. Aftermarket suspensions with offset struts can reduce spacer thickness. See below. 
    • 295/30-19 or 295/35-19 tires can also be used with at least -2.5 degrees of front camber and at least 20mm spacers up front to clear most suspensions. Aftermarket suspensions with offset struts can reduce spacer thickness. See below. 
    • 315/30-19 tires can also be used with at least -3.5 degrees of front camber and at least 25mm spacers up front to clear most suspensions. Aftermarket suspensions with offset struts can reduce spacer thickness. See below. 
  • Front: 19x11” ET26 with 305/30-19
    Rear: 19x11” ET52 with 305/30-19
    • Direct fit
    • 295/30-19 or 295/35-19 tires can also be used with at least -2.5 degrees of front camber and at least 20mm spacers up front to clear most suspensions. Aftermarket suspensions with offset struts can reduce spacer thickness. See below.
    • 315/30-19 tires can also be used with at least -3.5 degrees of front camber and at least 25mm spacers up front to clear most suspensions. Aftermarket suspensions with offset struts can reduce spacer thickness. See below.


Staggered Setups
Maintains stock-like handling characteristics, tires can only be rotated left to right. Maximizes both front and rear tire width.

  • Front: 19x11” ET26 with 305/30-19
    Rear: 19x11.5” ET56 with 325/30-19
    • OEM GT350R fitment
    • Requires at least -3 degrees of front camber
    • 295/30-19 or 295/35-19 tires can also be used up front with at least -2.5 degrees of front camber
    • 315/30-19 tires could also be used in the rear. 335 width tires are not recommended

 

Brakes that clear 18”

OEM 4 piston
OEM Performance Package Brembo 6 piston
Stoptech ST60 380mm (Trophy)
Wilwood 6 pot 14” Superlite

Brakes that clear 19”

OEM 4 piston
OEM Performance Package Brembo 6 piston
Stoptech ST40 355mm, ST60 355mm, ST60 380mm (Trophy)
Wilwood 6 pot 14” Superlite
Brembo GT 6 pot 380mm
OEM GT350/R Brembo 6 piston 15.5”

 

Additional Fitment Information

Identifying Suspension Types
See the image below to identify which type of suspension you have, as it may effect your wheel fitment.

coiloverclearance-mustang.jpg

Aftermarket S550 Mustang Suspensions Known To Reduce Inner Clearance
(includes but not limited to):

Roush Coilovers
KW V1 Coilovers

 

About Camber Plates 

mustang-camber.jpg

Adjustable camber plates do more than just aid in wide wheel and tire fitment. They provide increased grip and reduced tire wear by spreading the load evenly during cornering. Learn more in our blog article, The Positives of Negative Camber, then see our S550 Mustang Camber plate page here.

Big Brake Kit Clearances
brake-clearance.jpg

We have tested many big brake kits with most of the wheels listed in this guide. Those that have been confirmed to clear are listed in the table below. Please email us with any questions related to brake clearance, we’ll be happy to help.

Clears 18" EC-7  Clears 19" EC-7
  • OEM Brembo 4 & 6 piston
  • Stoptech ST60 380mm (Trophy)
  • Wilwood 6 pot 14” Superlite
  • OEM Brembo 4 & 6 piston
  • Stoptech ST40 355mm, ST60 355mm, ST60 380mm (Trophy)
  • Wilwood 6 pot 14” Superlite
  • Brembo GT 6 pot 380mm

Still have questions?
Fill out our Fitment Recommendation form
Call us: 925-245-0773
Email us: support@apexraceparts.com

 

Was this article helpful?
0 out of 0 found this helpful
Have more questions? Submit a request

Comments