Porsche 911 991 GT2RS & GT3RS Wheel & Tire Fitment Guide

Looking to increase the performance of your 2015-2016 991.1 Porsche GT3RS or 2018-2019 991.2 Porsche GT3RS/GT2RS? Look no further than this Porsche 911 991 GT2RS & GT3RS Wheel & Tire Fitment Guide covering the 991.1 and 991.2 GT3RS and GT2RS. With Performance street and track fitments with our 20” lineup as well as Hardcore track fitments using 19” wheels. We have you covered no matter what you plan on using your RS model for. With Forged options like the VS-5RS and EC-7RS, you have some decisions to make on your next set of performance wheels.

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

Rear Lower Control Arm Bolt Modification - Required for 19" Wheels

If you have steel brakes, downsizing to a 19" wheel and tire package is advantageous for many reasons including a reduction in weight and an increase in tire options. By decreasing the diameter of the wheels, the inner barrel of the rear wheels get quite close to the factory lower control arm "stabilizer bolt". To improve clearance, we recommend replacing the stock hex head bolts with Porsche 72mm pan head bolts - part # 999-073-530-01 which are under $10. 

Rear Axle Steering (RAS) Clearance

All 19" and 20" APEX wheels are optimized to clear rear axle steering.

Our most popular fitments for the GT3RS and GT2RS with multiple fitment options to best suit your needs and use case. With options for steel brake or PCCB cars or aftermarket kits from AP/Essex and PFC, it doesn't matter how your current RS is setup we have a solution for you. Get more performance out of your GT3RS or GT2RS today.

Wheels

• Front Wheel Size: 20x9.5" ET50
• Rear Wheel Size: 21x12.5" ET48
• • Available: in VS-5RS

Tires

• APEX Staff Pick:
• • Front Tire Size: 265/35-20
  • Rear Tire Size: 325/30-21
  • Direct Fit
  • Max Performance Summer: Michelin PS4S (300TW)
  • Extreme Performance Summer: Nankang CR-S (200TW), Yokohama AD09 (200TW)
  • R-Compounds: Pirelli Trofeo R (60TW), Dunlop Sport Maxx Race 2 (80TW), Michelin Cup 2R (140TW), Michelin Sport Cup 2 (180TW)
  • Semi-Slick: No options currently available

Wheels

• Front Wheel Size: 19x9.5"ET50
• Rear Wheel Size: 20x12.5"ET48
• • Available in VS-5RS
  • Popular Fitment

Tires

• APEX Staff Pick:
• • Front Tire Size: 265/35-19
  • Rear Tire Size: 325/30-20
  • Direct Fit
  • Max Performance Summer: No options currently available
  • Extreme Performance Summer: No options currently available
  • R-Compound: Michelin Cup 2 (180 TW), Toyo R888R (100 TW)
  • Semi-Slick: No options currently available

Our track-oriented fitment for the GT3RS and GT2RS with factory 380mm steel brakes or aftermarket AP/Essex or PFC brake kits. Perfect for the owner looking to get the utmost performance on track and reduce as much unsprung and rotational weight as possible. Has the option of running everything from a Cup 2 to a Pirelli DH slick.

Wheels

• Front Wheel Size: 19x10" ET42
• Rear Wheel Size: 19x13" ET45
• • Available in EC-7RS
  • Popular Fitment
  • Rear lower control arm bolt required (see above)
  • Track alignment is recommended with additional camber from the front strut top mount.

Tires

• APEX Staff Pick:
• • Front Tire Size: 265/35-19
  • Rear Tire Size: 325/30-19
  • 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)
• Alternate 1:
• • Front Tire Size: 275/675-19
  • Rear Tire Size: 325/705-19
  • Racing Slick: Pirelli DH

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 Steel 6 piston 380x34mm f. / 4 piston 380x30mm r. - 19" & 20" wheels clear
• Porsche PCCB 6 piston 410x34mm f. / 4 piston 390x30mm r. - 20" wheels required, read our article for more info.
• AP Racing by Essex CP9661 Front 6 piston 394x34mm - 13.01.10073 - 19" & 20" wheels clear
• AP Racing by Essex CP9449 Rear 4 piston 380x32mm - 13.01.10074 - 19" & 20" wheels clear

Still have questions?

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