991.2 911 C4 & C4S Wheel & Tire Fitment Guide

  • Updated

For 2017-2019 Porsche 991.2 911 C4 & C4S Widebody

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Vehicle Covered in this Guide

2017-2019 Porsche 991.2 911 C4 & C4S chassis 

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 Porsche optional 6 piston 410mm PCCBs require 20" wheels for proper clearance. Read our article for more info.

Rear Axle Steering (RAS) Clearance

All 19" and 20" APEX wheels are optimized to clear rear axle steering (Images at bottom of guide)

Available Wheel Designs (click images to enlarge)

 

Forged Designs   

VS-5RS

VS5RS1810ET25_Brushed_2K_01-500.png

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EC-7RS

EC7RS1811ET7-5120-671_C_Brushed_2K_01-500.png

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Bolt Pattern Center Bore Lug Seat Thread Pitch
5x130mm 71.6mm R14 Ball Seat M14x1.5mm

 

 

Performance Street & Track

Wider fitments for enhanced performance

Whether you enjoy spirited street driving or you are a weekend track warrior chasing lap times, these wheel & tire configurations are ideal for enthusiasts looking for a more dramatic improvement in performance. Most notably, these fitments incorporate wider 9” front wheels which provide superior tire sidewall support over the stock 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.

 

Wheels

  • Front: 19x9” ET50 // Rear: 19x12” ET46
    • Available in: EC-7RS & VS-5RS 
    • Popular fitment

Tires

  • APEX Staff Pick: Front: 265/35-19 // Rear: 325/30-19
    • Typically a direct fit but we encourage a little negative camber up front for tire compounds that run wide 
    • Max Performance Summer: Michelin PS4S (300 TW)
    • Extreme Performance Summer: Goodyear Eagle Supercar 3 (220 TW), Continental Extremecontact Force (220 TW)
    • R-Compound: Nankang AR-1 (100 TW), Michelin Cup 2 (180 TW), Toyo R888R (100 TW)
    • Semi-Slick: Hoosier R7 & A7(40 TW)
  • Alternative #1: Front: 255/35-19 // Rear: 315/30-19
    • Direct fit
    • Max Performance Summer: Michelin PS4S (300 TW)
    • Extreme Performance Summer: No options currently available
    • R-Compound: Michelin Cup 2 (180 TW)
  • Alternative #2: Front: 245/35-19 // Rear: 305/30-19
    • Direct fit
    • Max Performance Summer: Michelin PS4S (300 TW)
    • Extreme Performance Summer: Nankang CR-S (200 TW), Goodyear Eagle Supercar 3 (220 TW), Falken RT660 (200 TW)
    • R-Compound: Goodyear Eagle Supercar 3R (100 TW), Nankang AR-1 (100 TW), Michelin Cup 2 (180 TW), Toyo R888R (100 TW)

 

Wheels

  • Front: 20x9" ET44 // Rear: 20x12" ET47
    • Available in: VS-5RS 
    • Popular fitment

Tires

  • APEX Staff Pick: Front: 245/35-20 // Rear: 305/30-20
    • Direct Fit
    • Factory C4S Tire Sizes
    • Max Performance Summer: Michelin PS4S (300 TW)
    • Extreme Performance Summer: Nankang CR-S (200 TW), Michelin PS Cup 2 240 Connect (240 TW)
    • R-Compounds: Michelin PS Cup 2 (180 TW), Michelin PS Cup 2 R (140 TW), Pirelli Trofeo R (60 TW), Dunlop Sport Maxx Race 2 (80 TW)
    • Semi-Slick: Hoosier R7 (40 TW)
  • Alternative: Front: 255/35-20 // Rear: 315/30-20
    • Direct Fit
    • Max Performance Summer: Michelin PSS (300 TW)
    • Extreme Performance Summer: Michelin PS Cup 2 240 Connect (240 TW)
    • R-Compounds: Michelin PS Cup 2 (180 TW), Michelin PS Cup 2 R (140 TW) (60 TW), Toyo R888R (100TW)
    • Semi-Slick: No options currently available

  • Hardcore Track & Race

    All-out performance for fastest lap times

    • Front: 19x9.5” ET45 // Rear: 19x12"ET46
      • Available in: VS-5RS 

    Tires

    • APEX Staff Pick: Front: 265/35-19 // Rear: 325/30-19
      • Camber plates are required 
      • Max Performance Summer: Michelin PS4S (300 TW)
      • Extreme Performance Summer: Goodyear Eagle Supercar 3 (220 TW), Continental Extremecontact Force (220 TW)
      • R-Compound: Nankang AR-1 (100 TW), Michelin Cup 2 (180 TW), Toyo R888R (100 TW)
      • Semi-Slick: Hoosier R7 & A7(40 TW)
    • Alternative #1: Front: 255/35-19 // Rear: 305/30-19
      • Camber plates may be required 
      • Max Performance Summer: Michelin PS4S (300 TW)
      • Extreme Summer: Yokohama AD08R (200 TW)
      • R-Compound: Michelin Cup 2 (180 TW)
    • Alternative #2: Front: 255/35-19 // Rear: 315/30-19
      • Camber plates may be required 
      • Max Performance Summer: No options currently available
      • Extreme Performance Summer: No options currently available
      • R-Compound: Michelin Cup 2 (180 TW)

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: 

  • Porsche C4 4 piston 330x34mm F. / 4 piston 330x34mm R. - Clears 19" wheels
  • Porsche C4S/GTS 6 piston 350x34mm F. / 4 piston 330x34mm R. - Clears 19" wheels
  • Porsche PCCB 6 piston 410x34mm f. / 4 piston 390x30mm r. - 20" wheels required, read our article for more info.
  • Brembo GT/GTS/GTR Front 6 piston 380x34mm - 1N1.9068A - Clears 19" wheels
  • Brembo GT Front 6 piston 380x34mm - 1T1.9021A - Clears 19" wheels
  • Brembo GT/GTS/GTR Rear 4 piston 380x28mm - 2P1.9066A - Clears 19" wheels
  • Brembo GT Rear 4 piston 380x28mm - 2S1.9019A - Clears 19" wheels
  • AP Racing by Essex CP9661 Front 6 piston 372x34mm - 13.01.10096 - Clears 19" wheels
  • AP Racing by Essex CP9449 Rear 4 piston 365x30mm - 13.01.10097 - Clears 19" wheels
  • AP Racing by Essex 9562 Front 6 piston 380x36mm - 20.01.10000 - Clears 19" wheels
  • AP Racing by Essex 9541 Rear 4 piston 380x28mm - 20.01.10001 - Clears 19" wheels

Rear Axle Steering Clearance Images With 19" Wheels

 

Should I Dial in Negative Camber, and How Much is Right for me? 

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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?
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Email us: support@apexraceparts.com