Porsche 911 GT3 / GT3 Touring / S/T 992.1 Wheel Fitment Guide
This guide covers three related 992.1 models that share an identical wheel and brake platform: the 911 GT3 (2022-2024), the 911 GT3 Touring (2022-2024), and the limited-edition 911 S/T (2024, 1,963 units). All three use the same OEM wheel dimensions, the same centerlock hub, and the same 20/21″ staggered configuration. They all ride on the Carrera-family body — not the wider Turbo body used by the GT3 RS. Despite sharing the Carrera body width, their wheel offsets are completely different from the Carrera/GTS family: the GT3 family runs ET46 front and ET45 rear, versus the Carrera S’s ET53 front and ET67 rear.
The key differences between the three models in this guide: the S/T ships standard with PCCB ceramic brakes while the GT3 and GT3 Touring use steel brakes standard; the S/T deletes rear-axle steering while both GT3 variants have it standard; the GT3 and GT3 Touring offer both 6-speed manual and 7-speed PDK while the S/T is manual-only; and the S/T uses the GT3 RS engine (518 hp) while the GT3 and GT3 Touring use the standard 502 hp GT3 engine. For wheel fitment purposes, these differences are mostly secondary — all three use identical wheel hardware, identical brake clearance thresholds, and the same centerlock torque protocol.
All three ship exclusively with centerlock wheels. The centerlock nut requires a calibrated centerlock torque tool at 600 Nm — impact wrenches are never appropriate. Spacers are not compatible with the centerlock hub. Direct TPMS sensors must be transferred or replaced when fitting aftermarket wheels.
About this guide: The fitment data below is compiled from owner-submitted builds and enthusiast forum research across Rennlist's 992 GT3 / GT2 RS subforum and Planet-9. We summarize what 992.1 GT3, GT3 Touring, and S/T owners have reported running successfully so you have a researched starting point for your build.
Every FMB build goes through a sanity check and an engineering verification before forging. We cross-reference the configuration you're ordering against your trim and brake package and what's commonly documented on similar builds — and our manufacturing partner verifies the wheel itself (backspace, brake caliper clearance, structural spec) before production begins.
Fitment decisions involving ride height, tire choice, and suspension setup are yours and your installer's call. Use this guide as research, not as a substitute for a real fitment conversation.
Factory Wheel & Tire Configurations
All three models use the same standard delivery wheel: 9.5Jx20 ET46 front / 12Jx21 ET45 rear, forged aluminum, centerlock. Two optional upgrade packages are available: the Manthey Lightweight forged aluminum (GT3 and GT3 Touring only) and the GT3 / S/T Magnesium (forged magnesium, fits all three). The S/T ships standard with the magnesium wheel in an S/T-specific Heritage finish, while GT3 and GT3 Touring buyers can order the same magnesium wheel as an optional upgrade.
Aftermarket Wheel & Tire Configurations
All setups below apply equally to the GT3, GT3 Touring, and S/T — all three share identical wheel well geometry, identical wheel hardware, and the same 408mm or 410mm front brake clearance threshold that requires 20″ minimum front wheels. The street setups below use 20″ fronts and clear all three OEM brake configurations (GT3 / Touring 408mm steel, GT3 / Touring optional 410mm PCCB, S/T standard 410mm PCCB). The track setup uses 19″ fronts and requires replacing the factory front brakes with an aftermarket kit whose calipers clear 19″ wheels. All configurations clear rear-axle steering on the GT3 and GT3 Touring; the S/T has no RAS so this constraint is irrelevant on that model.
Three constraints define the GT3 / GT3 Touring / S/T fitment universe. First, despite sharing the Carrera-family body width, the GT3 family uses completely different wheel offsets from all other 992.1 Carrera variants — ET46 front and ET45 rear, versus the Carrera S's ET53 front and ET67 rear. GT3 wheels do not produce correct fitment on a Carrera, and vice versa. Second, all three models ship exclusively with centerlock wheels. The centerlock nut must be torqued to 600 Nm with a calibrated centerlock torque tool — never an impact wrench. Spacers are not compatible. Third, the standard 408mm steel brakes (GT3 / GT3 Touring) and standard 410mm PCCB ceramics (S/T, optional on GT3 / Touring) both require a minimum 20" front wheel. The only path to 19" fronts is replacing the factory front brakes with an aftermarket kit whose calipers clear 19" wheels.
Flush Fitment
Staggered Setup
Track Fitment
Staggered Setup
What Happens When You Build With FMB?
The configurations above are a starting point — not a final spec. When you start your build, here’s what actually happens before anything is forged:
- FMB sanity check. We cross-reference the configuration you’re ordering against your trim and brake package, and compare it to what’s commonly documented on similar builds. If the setup you want falls outside what we’ve seen work on this platform, we’ll flag it before you commit.
- Manufacturer engineering verification. Our manufacturing partner verifies the wheel itself — backspace, brake caliper clearance for your brake package, and structural spec — before production begins.
- Design render approval. You see the final design and confirmed specs before any aluminum is touched.
Ride height, tire choice, alignment, and suspension setup are variables your installer handles on the car — not things we verify from our end. That’s why we ask for the vehicle details we do on the build form: they’re the inputs we can actually check against.
FAQ - Frequently Asked Questions
Yes — all three share identical wheel dimensions: 9.5Jx20 ET46 front and 12Jx21 ET45 rear, 255/35ZR20 and 315/30ZR21 tires, on centerlock hubs. The standard delivery wheel is the same forged aluminum unit on the GT3 and GT3 Touring. The S/T ships standard with the forged magnesium wheel in an S/T-specific Heritage finish — same dimensions, same hub, just different construction and finish. Fitment is documented as compatible across all three models in OEM parts catalogs and Porsche dealer documentation.
Standard delivery on GT3 and GT3 Touring: 9.5Jx20 ET46 front with 255/35ZR20 and 12Jx21 ET45 rear with 315/30ZR21, forged aluminum centerlock. Available finishes include Brilliant Silver, Brilliant Chrome Metallic, Dark Silver, Satin Black, and Neodyme. Two optional upgrades are available: the Manthey Lightweight forged aluminum (same dimensions, 7.3 kg / 16.1 lbs lighter per vehicle set, GT3 / GT3 Touring only) and the GT3 / S/T Magnesium (same dimensions, forged magnesium, 8.7 kg / 19.1 lbs lighter per vehicle set, fits all three). The S/T ships standard with the magnesium wheel as Heritage Magnesium with S/T-specific badging.
The wheels physically mount — same 5×130 bolt pattern and 71.6mm center bore — but the offsets are completely wrong for the other body. GT3 front wheels use 9.5×ET46 versus the Carrera S’s 8.5×ET53; GT3 rear wheels use 12×ET45 versus the Carrera S’s 11.5×ET67. Mounting GT3 front wheels on a Carrera S would result in approximately 20mm of additional protrusion at the front (combining the 7mm offset difference with the wider 9.5″ rim adding 6.35mm more outboard at the face), and GT3 rear wheels would protrude approximately 28mm further than correct (combining the 22mm offset difference with the wider 12″ rim adding 6.35mm more outboard). Carrera wheels on a GT3 would sit deeply tucked. Beyond aesthetics, incorrect offset affects scrub radius and handling geometry. These wheels are not interchangeable in practice.
The GT3 and GT3 Touring ship standard with 6-piston 408mm front steel brakes. These cannot be cleared by a 19″ front wheel. The optional PCCB ceramics on the GT3 family (and standard on the S/T) are 410mm front — also too large for 19″. The only path to 19″ fronts on any of these three models is replacing the factory front brakes with an aftermarket kit whose calipers clear 19″ — documented aftermarket kits in the 394mm front rotor range are confirmed to clear 19″ and 20″ wheels on this platform.
GT3 and GT3 Touring standard: 6-piston 408mm front / 4-piston 380mm rear, cast iron, red calipers. Optional PCCB on GT3 / Touring: 6-piston 410mm front / 4-piston 390mm rear, yellow calipers. S/T standard: PCCB ceramics are standard equipment on the S/T — 6-piston 410mm front / 4-piston 390mm rear, yellow calipers — PCCB is not optional on the S/T, it ships with them. All brake configurations across all three models require a minimum 20″ front wheel.
600 Nm / 444 lb-ft, using a calibrated centerlock torque tool, per Porsche specification for all 992-generation centerlock wheels. Standard impact wrenches must never be used — they apply uncontrolled impact force that damages the anodized nut profile and can compromise proper seating. Porsche specifies a programmed sequence: tighten to 600 Nm clockwise, reverse 60 degrees, then re-tighten to 600 Nm clockwise. For owners without the correct equipment, wheel changes should be done at a Porsche service center or a shop with the proper tool.
The S/T does not have rear-axle steering — this is one of its defining characteristics, intentionally deleted to sharpen steering response and reduce weight. The GT3 and GT3 Touring both have rear-axle steering standard. For wheel fitment purposes: documented aftermarket 19″ and 20″ wheel configurations for the 992.1 GT3 family clear RAS actuators on the GT3 and GT3 Touring. The S/T has no RAS actuators to clear, so there is no RAS fitment concern on that model.
Magnesium is significantly lighter than aluminum — the GT3 / S/T Magnesium wheel set saves approximately 8.7 kg / 19.1 lbs per vehicle set versus the standard forged aluminum wheels, and 1.4 kg / 3 lbs versus the Manthey Lightweight aluminum. This reduction in unsprung and rotating mass improves suspension response and steering feel. The tradeoff is that magnesium requires specific care: alkaline or acidic wheel cleaners will corrode the material. Only pH-neutral cleaners approved for magnesium should be used. The Porsche Wheel Protection Plan coverage on magnesium varies — confirm with your dealer before purchasing.
None. The GT3 Touring uses the same body, the same suspension, the same wheel and tire specs, and the same brake configurations as the GT3. The Touring package removes the fixed rear wing and replaces it with a deployable spoiler, adds leather interior trim, and offers additional Manufaktur trim options. Both are available with the 6-speed manual or 7-speed PDK transmission on the 992.1. All wheel fitment data in this guide applies identically to both. The only ordering difference relevant to fitment is that the Manthey Performance Kit is available on both models, while the Clubsport package is GT3-only.
GT3 and GT3 Touring: 2022-2024 USDM (unveiled February 2021, US deliveries began MY2022). The 992.2 GT3 and GT3 Touring were unveiled October 2024 for MY2025. S/T: MY2024 only, limited to 1,963 units worldwide, produced in 2023-2024. This guide covers the 992.1 generation only and does not apply to the 992.2 GT3 or GT3 Touring.
At stock ride height, the most commonly documented aftermarket setups on the 992.1 GT3 family are 20/21″ diameter staggered configurations matching or slightly outboard of OEM ET46 front and ET45 rear. For flush stance: the 20×9.5 ET44 / 21×12 ET44 setup is the most widely documented direct-fit configuration with OEM tire sizing or the wider 265/35-20 / 325/30-21 combination; the 20×9.5 ET46 / 20×12 ET45 setup keeps OEM offsets but drops to a 20″ rear, opening up additional tire compound options for track use. For track use only: the 19×10 ET50 / 20×12.5 ET47 setup with 265/35-19 / 325/30-20 tires requires replacing the factory front brakes with an aftermarket kit since neither the 408mm steel nor 410mm PCCB clears a 19″ front wheel. All flush configurations clear OEM brakes and rear-axle steering. There is no spacer-based path to outward stance on this platform — all outward stance is achieved through aftermarket centerlock wheel offset selection.
Every FMB order goes through a sanity check and an engineering verification before any aluminum is forged. First, our team cross-references the configuration you’re ordering against your trim (GT3, GT3 Touring, or S/T) and brake package (408mm steel or 410mm PCCB ceramic) and flags anything that falls outside what’s commonly documented on similar 992.1 GT3, GT3 Touring, and S/T builds. We confirm centerlock hub compatibility and rear-axle steering clearance (on GT3 and GT3 Touring — the S/T deletes RAS as a defining characteristic) on every build. Second, our manufacturing partner verifies the wheel itself — backspace, brake caliper clearance for your specific brake package, centerlock hub fitment, and structural spec — before production begins. You then approve the final design render and confirmed specs before any work starts. Ride height, tire choice, and alignment are things your installer handles on the car; the fitment guides on this site are researched starting points for making those decisions with your installer. The 600 Nm centerlock nut torque procedure is yours and your installer’s responsibility on every wheel install — the proper centerlock torque tool is a non-negotiable part of CL ownership.