All 2017+ 718 Porsche Cayman and Boxster chassis including the GT4 & Spyder.
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Vehicle Covered in this Guide
2017+ Porsche Cayman/Boxster chassis including base, S, T, & GTS models.
* Click here to review our 718 GT4/Spyder guide
Brake Clearance Information
In the engineering phase of wheel development we 3D scan factory brakes and review 2D aftermarket brake templates in order to optimize our barrel profiles and spoke curvatures. As a result, our wheels offer massive brake clearance so you can run the smallest possible wheel diameter.
Available Wheel Designs (click images to enlarge)
| Forged Designs | Flow Formed Designs |
| EC-7R | SM-10 |
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| Bolt Pattern | Center Bore | Lug Seat | Thread Pitch |
| 5x130mm | 71.6mm | R14 Ball Seat | M14x1.5mm |
OEM+ Fitments
These direct bolt-on fitments are ideal for enthusiasts planning to run performance summer or all-season tires that enjoy their car day-to-day on the street. These wheel fitments will improve the appearance and performance of the car without requiring modifications or adjustments to the factory alignment.
Wheels
- Front: 18x8.5" ET45 // Rear: 18x10" ET36
- Available in SM-10
- Popular Fitment
Tires
- APEX Staff Pick: Front: 245/40-18 // Rear: 275/40-18
- Direct Fit
- Ultra High Performance All-Season: Michelin Pilot Sport AS4 (540 TW)
- Max Performance Summer: Michelin PSS (300 TW)
- Extreme Performance Summer: Yokohama A052 (240 TW), Nankang CR-1 (200 TW), Hankook RS-4 (200 TW), Goodyear Supercar 3 (220 TW)
- Alternative: Front: 235/45-18 // Rear: 265/45-18
- Factory Tire Sizes
- Direct Fit
- Ultra High Performance All-Season: Michelin Pilot Sport AS4 (540 TW)
- Max Performance Summer: Bridgestone Potenza Sport (300 TW), Bridgestone S-04 PP (280 TW)
- Extreme Performance Summer: Yokohama A052 (200 TW)
Wheels
- Front: 19x9" ET50 // Rear: 19x10" ET40
- Available in SM-10
- Popular Fitment
Tires
- APEX Staff Pick: Front: 245/40-19 // Rear: 285/35-19
- Direct Fit
- Ultra High Performance All-Season: Continental Extremecontact DWS 06+ (560 TW)
- Max Performance Summer: Michelin PS4S (300 TW)
- Extreme Performance Summer: Michelin Pilot Sport Cup 2 240 Connect (240 TW), Goodyear Supercar Eagle 3 (220 TW)
- Alternative 1: Front: 235/40-19 // Rear: 265/40-19
- Factory Tire Sizes
- Direct Fit
- Ultra High Performance All-Season: Michelin Pilot Sport AS4 (540 TW)
- Max Performance Summer: Michelin PS4S (300 TW)
- Extreme Performance Summer: Yokohama A052 (200 TW)
- Alternative 2: Front: 255/35-19 // Rear: 285/35-19
- Direct Fit
- Ultra High Performance All-Season: Continental Extremecontact DWS 06+ (560 TW)
- Max Performance Summer: Michelin PS4S (300 TW)
- Extreme Performance Summer: Michelin Pilot Sport Cup 2 240 Connect (240 TW)
Performance Street & Track Fitments
Whether you enjoy modifying your Porsche for spirited street driving and canyon runs, or you're a hardcore track junkie chasing lap times, these wheel & tire configurations are best suited for enthusiasts looking for a dramatic improvement in performance and handling. These fitments incorporate wider 9” front wheels which provide superior tire sidewall support over the more "generic" 8.5" front wheels. A wider front wheel and tire combination will increase front end grip and close the stagger from front to rear resulting in sharper turn-in and less understeer. This is one of the easiest and most effective improvements you can make to your Porsche from a handling perspective.
We've optimized the offset of our 9" front wheels to to work well with the stock fenders, however, a wide variety of tire compounds can be used and some may require negative camber to fit properly. If you plan to track your car, we highly recommended dialing in negative camber regardless of whether your wheel/tire fitment requires it for fender clearance. Negative camber is vital for extracting the most performance and longevity out of your tires, and without the proper amount the outer shoulders of your tires will wear out prematurely and running tire costs will dramatically increase.
Wheels
- Front: 18x9" ET46 // Rear: 18x10.5" ET44
- Available in EC-7R
- Popular Fitment
Tires
- APEX Staff Pick: Front: 245/40-18 // Rear: 275/40-18
- Typically a direct fit, but we encourage a little additional negative camber up front to prevent rubbing upon suspension compression
- Max Performance Summer: Michelin PSS (300 TW)
- Extreme Performance Summer: Yokohama A052 (240 TW), Hankook RS-4 (200 TW), Goodyear Supercar 3 (220 TW), Nankang CR-1 (200 TW),
- R-Compounds: Nitto NT01 (100 TW), Nankang AR-1 (100 TW)
- Semi-Slicks: No options currently available
- Alternative 1: Front: 255/35-18 // Rear: 275/35-18
- A moderate amount of negative camber is encouraged up front to prevent rubbing upon suspension compression
- Max Performance Summer: Michelin PS4S (300 TW)
- Extreme Performance Summer: Hankook RS-4 (200 TW), Dunlop Direzza ZIII (200 TW), Falken RT660 (200 TW), Nankang CR-1 (200 TW)
- R-Compound: Nankang AR-1 (100 TW), Toyo R888R
- Semi-Slick: Hoosier R7 & A7 (40 TW)
- Alternative 2: Front: 255/35-18 // Rear: 295/30-18
- A moderate amount of negative camber is encouraged up front to prevent rubbing upon suspension compression
- Short rolling diameter front & rear
- Max Performance Summer: Michelin PS4S (300 TW)
- Extreme Performance Summer: Yokohama A052 (200 TW)
- R-Compound: Nankang AR-1 (100 TW), Toyo R888R
- Semi-Slick: Hoosier R7 & A7 (40 TW), Toyo RR (40 TW)
- Alternative 3: Front: 265/35-18 // Rear: 295/35-18
- Adjustable camber plates required with a minimum of -3º of front camber
- Max Performance Summer: Continental Extremecontact Sport (340 TW)
- Extreme Performance Summer: Yokohama A052 (200 TW)
- R-Compound: No options currently available
- Semi-Slick: No options currently available
- Alternative 4: Front: 245-645-18 // Rear: 305-660-18
- A moderate amount of negative camber is encouraged up front to prevent rubbing upon suspension compression
- Racing Slick: Pirelli DH
- Alternative 5: Front: 265-645-18 // Rear: 305-660-18
- Adjustable camber plates required with a minimum of -3º of front camber
- Racing Slick: Pirelli DH
Wheels
- Front: 18x9" ET46 // Rear: 18x10" ET36
- Available in SM-10
- Popular Fitment
Tires
- APEX Staff Pick: Front: 245/40-18 // Rear: 275/40-18
- Typically a direct fit, but we encourage a little additional negative camber up front to prevent rubbing upon suspension compression
- Max Performance Summer: Michelin PSS (300 TW)
- Extreme Performance Summer: Yokohama A052 (240 TW), Hankook RS-4 (200 TW), Goodyear Supercar 3 (220 TW), Nankang CR-1 (200 TW),
- R-Compounds: Nitto NT01 (100 TW), Nankang AR-1 (100 TW)
- Semi-Slicks: No options currently available
- Alternative 1: Front: 255/35-18 // Rear: 275/35-18
- A moderate amount of negative camber is encouraged up front to prevent rubbing upon suspension compression
- Max Performance Summer: Michelin PS4S (300 TW)
- Extreme Performance Summer: Hankook RS-4 (200 TW), Dunlop Direzza ZIII (200 TW), Falken RT660 (200 TW), Nankang CR-1 (200 TW)
- R-Compound: Nankang AR-1 (100 TW), Toyo R888R
- Semi-Slick: Hoosier R7 & A7 (40 TW)
Wheels
- Front: 19x9" ET50 // Rear: 19x10.5" ET44
- Available in SM-10
- Popular Fitment
Tires
- APEX Staff Pick: Front: 255/35-19 // Rear: 285/35-19
- Direct fit
- Max Performance Summer: Michelin PS4S (300 TW)
- Extreme Performance Summer: Michelin Pilot Sport Cup 2 240 Connect (240 TW)
- R-Compound: No options currently available
- Semi-Slick: No options currently available
- Alternative 1: Front: 265/35-19 // Rear: 285/35-19
- Adjustable camber plates required with a minimum of -2.5º of front camber
- Max Performance Summer: Michelin PS4S (300 TW)
- Extreme Performance Summer: Michelin Pilot Sport Cup 2 240 Connect (240 TW), Goodyear Supercar 3 (220 TW)
- R-Compound: Goodyear Supercar 3R (100 TW), Toyo R888R (100 TW)
- Semi-Slick: No options currently available
- Alternative 2: Front: 265/35-19 // Rear: 295/35-19
- Adjustable camber plates required with a minimum of -2.5º of front camber
- Max Performance Summer: Michelin PS4S (300 TW)
- Extreme Performance Summer: Falken RT660 (200 TW)
- R-compound: Michelin Cup 2 (180 TW)
- Semi-Slick: Hoosier R7 (40 TW)
Wheels
- Front: 19x9" ET50 // Rear: 19x11" ET46
- Available in SM-10
Tires
- APEX Staff Pick: Front: 265/35-19 // Rear: 295/35-19
- Adjustable camber plates required with a minimum of -2.5º of front camber
- Max Performance Summer: Michelin PS4S (300 TW)
- Extreme Performance Summer: Falken RT660 (200 TW)
- R-compound: Michelin Cup 2 (180 TW)
- Semi-Slick: Hoosier R7 (40 TW)
- Alternative 1: Front: 265/35-19 // Rear: 305/30-19
- Adjustable camber plates required with a minimum of -2.5º of front camber
- Max Performance Summer: Michelin PS4S (300 TW)
- Extreme Performance Summer: Michelin Pilot Sport Cup 2 240 Connect (240 TW), Yokohama AD08R (200 TW), Goodyear Supercar 3 (220 TW), Falken RT660 (200 TW)
- R-Compound: Toyo R888R (100 TW), Michelin Pilot Sport Cup 2 (180 TW), Nankang AR-1 (100 TW)
- Semi-Slick: No options currently available
- Alternative 2: Front: 255/35-19 // Rear: 305/30-19
- Direct fit
- Max Performance Summer: Michelin PS4S (300 TW)
- Extreme Performance Summer: Michelin Pilot Sport Cup 2 240 Connect (240 TW), Yokohama AD08R (200 TW)
- R-compound: Michelin Cup 2 (180 TW)
- Semi-Slick: No options currently available
Additional Resources
Brake Clearance Information
In the engineering phase of wheel development we 3D scan factory brakes and review 2D aftermarket brake templates in order to optimize our barrel profiles and spoke curvatures. As a result, our wheels offer massive brake clearance so you can run the smallest possible wheel diameter. The following brakes have been tested and confirmed to clear our wheels.
- Factory Base 4 piston - Clears all
- Factory S/GTS 4 piston - Clears all
- Factory PCCB 6 piston 350mm - Clears all
- Brembo 1M1.9040A 6 piston 380mm - Clears all
- Brembo 1M1.8048A 6 piston 355mm -Clears all
- Brembo 1N3.8021A 6 piston 350mm - Clears all
- Brembo 1P1.8516A 4 piston 365mm - Clears all
- AP Racing CP9661 13.01.10096 6 piston 372mm - Clears all
- AP Racing CP9661 13.01.10072 6 piston 355mm - Clears all
Should I Dial in Negative Camber, and How Much is Right for me?
Whether you are a casual weekend track warrior that still enjoys your car on the street, or a hardcore racer competing for a spot on the podium, negative camber is a vital part of chassis setup that has many benefits. Not only will adding negative camber create more room for wider wheel and tire configurations, it more importantly improves handling, turn-in and tire longevity. Learn more in our blog article, The Positives of Negative Camber.
Still have questions?
Fill out our Fitment Recommendation form
Call us: 925-245-0773
Email us: support@apexraceparts.com