The 992.2 GT3 and GT3 Touring ride on a centerlock hub with a single central nut, 20-inch fronts and 21-inch rears, and factory offsets of ET46 front and ET45 rear, unchanged from the 992.1 GT3. This guide covers the 2025+ GT3 and GT3 Touring, documented aftermarket setups from both generations, brake clearance and 19-inch track options.
About this guide: Factory specs come from Porsche's approved wheel and tire certificates for the 2025+ GT3. Aftermarket setups come from GT3 customer cars in wheel-maker galleries, Rennlist posts and vendor fitment documentation. Use it as research; ride height, tires and alignment are your call.
Pricing forged wheels for your 992.2 GT3? Full sets from $3,750 in 19″, or $4,150 in 20″/21″.See your exact price →
OEM Setups
Factory Wheel & Tire Configurations
Every 992.2 GT3 and GT3 Touring shares the hardware below. Porsche approves one 20/21-inch summer size on 255/35ZR20 front and 315/30ZR21 rear tires, the same size and offsets as the 992.1 GT3. The factory wheel, 9.5J ET46 / 12J ET45, is the reference for every "mm out" figure below.
Factory OffsetET46 front / ET45 rear (same as 992.1 GT3)
Brake System408mm steel or 410mm carbon ceramic front; 20-inch minimum front wheel
20″/21″ GT3 Wheel (Centerlock)
Standard — GT3 & GT3 Touring
Front Wheel9.5J×20 ET46
Rear Wheel12J×21 ET45
Front Tire255/35ZR20
Rear Tire315/30ZR21
ConstructionForged Aluminum
Part NumbersFront 9GT.601.025.BL · Rear 9GT.601.025.BM
Applies ToGT3 and GT3 Touring (2025+) · centerlock hub
The standard 992.2 GT3 wheel, forged, on the centerlock hub, with the same size and offsets as the 992.1 GT3 wheel, so 992.1 GT3 wheels sit in the same place. Porsche's certificate also lists a second GT3 design at this size. Its ET46 front and ET45 rear are the reference for every ladder below.
20″/21″ Manthey Lightweight Wheel (Centerlock)
Accessory — GT3 & GT3 Touring
Front Wheel9.5J×20 ET46
Rear Wheel12J×21 ET45
Front Tire255/35ZR20
Rear Tire315/30ZR21
ConstructionForged Aluminum
Applies ToGT3 and GT3 Touring (2025+) · centerlock hub
A lightweight forged set developed by Manthey with Porsche's Weissach development centre for the 992.2 GT3, at the factory sizes and offsets. Manthey says it cuts about 6 kg of unsprung and rotating mass per set, with material removed from the spokes and around the center lock. Fitment is identical to the factory wheel.
20″/21″ GT3 Winter Fitment
Winter — GT3 & GT3 Touring
Front Wheel9J×20 ET43
Rear Wheel11.5J×21 ET46
Front Tire245/35R20
Rear Tire305/30R21
ConstructionAluminum Alloy
Applies ToGT3 and GT3 Touring (2025+) · centerlock hub
Porsche's winter fitment for the GT3, a half-inch narrower than the summer wheel at each end, on Michelin Pilot Alpin 5 winter tires. By the lip formula it sits about 3mm inside the summer wheel at the front and 7mm at the rear. Snow chains are approved on the rear axle only.
Aftermarket Options
Aftermarket Wheel & Tire Configurations
Every card below is one wheel size, and every row is one documented GT3 build at its offset. Porsche lists the same factory sizes and offsets for the 992.1 and 992.2 GT3, so 992.1 owner builds are included and labeled. The centerlock hub takes no spacers, so every offset here is built into the wheel. Every documented build is staggered.
Tap a setup to jump to its full card. Fit: Bolt-on = documented at stock ride height with no fender work reported · Lowered = documented on lowering springs or coilovers · Not reported = owners didn't say. Sources = owner builds (including customer cars in vendor galleries) and vendor fitment-guide setups documented on that card.
Porsche's certificates list the same 9.5J ET46 front and 12J ET45 rear for the 992.1 and 992.2 GT3, so 992.1 GT3 wheels and builds carry over. GT3 and Carrera wheels don't swap: the 992.2 Carrera is 5-lug at ET50 / ET79, and the GT3 RS uses a wider body and wheel.
20-inch fronts with the factory brakes.
The 408mm steel and 410mm carbon ceramic front brakes both need a 20-inch front wheel. 19-inch setups need an aftermarket front brake kit with a smaller caliper, and the documented cars also route the rear wiring harness away from the wheel. Tell us which brakes your car has so caliper clearance is checked.
Centerlock only, no spacers.
Every car in this guide uses a single central locking nut torqued to 600 Nm with a calibrated tool. The hub takes no spacers, so every offset has to be built into the wheel. Rear-axle steering is standard; tell us when you order so the inner barrel is checked.
Staggered Setup
Most Popular
Stanceflush → poke
OEM
Aggressive
RWD onlyDaily
Front Wheels
20×9.5 ET44
Rear Wheels
21×12 ET44
Documented buildLip position vs. stock · F 9.5J ET46 · R 12J ET45
ET44 / ET44
992.1 GT3 (three cars) · customer cars in a vendor gallery: one on 255/35R20 / 315/30R21 Goodyear Eagle F1 SuperSport R, two on 265/35R20 / 325/30R21 Nankang CR-S, one of which reports added camber and a front rub near full lock · a vendor fitment guide lists this size for both factory brake packages · ride height not reported
Front2mm outRear1mm out
Sources
Well-documented
3 community
1 vendor
The most documented GT3 size keeps the factory diameters and widths and moves the face out about 2mm at the front and 1mm at the rear. The owner cars are 992.1 GT3s, which share the 992.2's factory sizes and offsets, and the vendor guide covers both generations. It runs on factory 255 / 315 tires or one size up on 265 / 325.
Stanceflush → poke
OEM
Aggressive
RWD onlyTrack
Front Wheels
20×9.5 ET44
Rear Wheels
20×12.5 ET48
Documented buildLip position vs. stock · F 9.5J ET46 · R 12J ET45
ET44 / ET48
992.1 GT3 · customer car in a vendor gallery · 255/35R20 / 325/30R20 Michelin Pilot Sport Cup 2 R · ride height not reported
Front2mm outRear3mm out
Sources
Documented
1 community
A 20-inch rear in place of the factory 21, a half-inch wider, so a 325/30R20 rear fits. Owners choose it for track tires: more compounds come in 20-inch sizes than in 21. The face sits about 2mm out at the front and 3mm at the rear. The 20-inch rear sits shorter than the factory 315/30R21, so speedometer readings change slightly.
Stanceflush → poke
OEM
Aggressive
RWD onlyShow
Front Wheels
21×9.5 ET40
Rear Wheels
22×12.5 ET45
Documented buildLip position vs. stock · F 20″ 9.5J ET46 · R 21″ 12J ET45
ET40 / ET45
GT3 Touring (model year not stated) · customer car in a wheel-maker forum post · the builder describes it as an appearance build · tires and ride height not reported
Front6mm outRear6mm out
Sources
Documented
1 community
A plus-one setup: 21-inch fronts and 22-inch rears, with the rear a half-inch wider than stock. The builder calls it an appearance build, not a track setup. Tires weren't reported, but 21/22-inch GT3 builds commonly run 255/30R21 fronts and 335/25R22 rears to stay close to the factory diameter. The face sits about 6mm out at both ends.
Stanceflush → poke
OEM
Aggressive
RWD onlyTrack
Front Wheels
19×10 ET42
Rear Wheels
19×12 ET46
Documented buildLip position vs. stock · F 20″ 9.5J ET46 · R 21″ 12J ET45
ET42 / ET46
Aftermarket front brakes992 GT3 (vendor guide, either generation) · listed for 265/35R19 / 325/30R19 tires · needs an aftermarket front brake kit with a 394mm rotor, trimming or removing the lower brake duct, and more negative camber
Front10mm outRear1mm in
Sources
Documented
1 vendor
A 19-inch track setup with a 12-inch rear, the factory rear width, and a 10-inch front. A vendor fitment guide lists it for both GT3 generations on 265 / 325 tires. The factory front brakes need a 20-inch wheel, so it requires an aftermarket front brake kit. The front sits about 10mm out; the rear sits about 1mm inside stock.
Stanceflush → poke
OEM
Aggressive
RWD onlyTrack
Front Wheels
19×10 ET42
Rear Wheels
19×13 ET45
Documented buildLip position vs. stock · F 20″ 9.5J ET46 · R 21″ 12J ET45
ET42 / ET45
Aftermarket front brakes992.1 GT3 (three cars) · customer cars in a vendor gallery, all on aftermarket front brakes (one on a 394mm six-piston kit) · two on 265/35R19 / 325/30R19 Michelin Pilot Sport Cup 2, one on slicks · the rear wiring harness needs routing away from the smaller wheel
Front10mm outRear13mm out
Sources
Well-documented
3 community
1 vendor
A dedicated track setup on 19-inch wheels at both ends. The factory front brakes need a 20-inch wheel, so every documented car runs an aftermarket front brake kit with a smaller caliper, and the rear wiring harness is routed away from the smaller wheel. The face sits about 10mm out at the front and 13mm at the rear; these cars run track alignments.
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Built to the exact spec, not the closest one on a shelf. The setups above come from real 992.2 GT3 builds, and we CNC-machine every wheel to them directly. If a build needs a spacer to reach its offset, we machine that offset into the wheel instead.
Choose your setup.
This guide is built to give you what you need to pick a spec with confidence: documented 992.2 GT3 builds, tire sizes, and how each one fits. If you still have questions, we're happy to help before you order.
Engineering verification.
Our manufacturing partner confirms wheel specs, including bolt pattern, center bore, brake caliper clearance, backspacing and load rating.
Render approval.
You approve the design and final specs before we move forward with production.
Our fitment guarantee
Every set is guaranteed to mount on your 992.2 GT3 or GT3 Touring: made for the factory centerlock hub and its central nut, with no spacers or adapters, and made to the exact width and offset you approved.
How a setup sits on your car also depends on ride height, tires and alignment, so choose with your plans in mind.
What are the factory wheel specs on the 992.2 GT3?
The 2025+ GT3 and GT3 Touring run forged 20/21-inch centerlock wheels: 9.5J×20 ET46 front on 255/35ZR20 and 12J×21 ET45 rear on 315/30ZR21 tires. A Manthey lightweight set is offered at the same sizes and offsets. Porsche's winter fitment is 9J×20 ET43 front and 11.5J×21 ET46 rear.
Did the GT3 wheel offsets change from the 992.1 to the 992.2?
No. Porsche's certificates list the same 9.5J×20 ET46 front and 12J×21 ET45 rear for both generations, so 992.1 GT3 wheels sit the same way on a 992.2 GT3, and the 992.1 builds on this page apply. That's different from the 992.2 Carrera, whose rear offset moved in. See our 992.1 GT3 guide.
What hardware does the 992.2 GT3 use?
Every 992.2 GT3 and GT3 Touring uses a centerlock hub, a single central locking nut in place of lug bolts, so there's no bolt pattern or lug seat to match. Porsche specifies 600 Nm (443 lb-ft), applied with a calibrated centerlock tool, never an impact wrench. An FMB set for this car is made for the centerlock hub.
What aftermarket wheel sizes are documented on the 992.2 GT3?
The most documented size is 20×9.5 ET44 front and 21×12 ET44 rear, on three GT3 customer cars and in a vendor fitment guide that covers both generations; it sits about 2mm out front and 1mm at the rear. A 20/20-inch track set, a 21/22-inch appearance build and two 19-inch track sets are also documented. Ride height wasn't reported.
How do I read the offset ladder on each card, and what's the difference between flush and aggressive?
Each card is one wheel size and each row is one documented build at its offset. The Front and Rear figures show how far the outer lip sits outside the factory 9.5J ET46 / 12J ET45 wheel. On the GT3, up to about 3mm reads as flush and 6mm as a mild step; the 19-inch track sets, around 10mm front, are the aggressive end.
Can I run 19-inch wheels on the 992.2 GT3?
Not with the factory front brakes. The 408mm steel and 410mm carbon ceramic front brakes both need a 20-inch front wheel. The documented 19-inch GT3 sets run an aftermarket front brake kit with a smaller caliper, and they route the rear wiring harness away from the wheel. Tell us which brakes your car has when you order.
Why is there no square setup on the 992.2 GT3?
Every factory GT3 package is staggered, and every aftermarket build we documented is staggered too, so there are no square builds to show. The closest is the 19-inch track set with a 10-inch front and 12-inch rear. The GT3 is rear-wheel drive, so rolling diameter doesn't stress a center differential, but it changes how the car balances on track.
Can I use wheel spacers on the 992.2 GT3?
No. The centerlock hub has no provision for spacers, so every offset on a GT3 has to be built into the wheel itself. That's why every row on this page is a wheel built at its listed offset. FMB machines the offset you choose directly into the wheel, so there's no spacer and no change to the factory centerlock nut.
Do 992.2 Carrera or GT3 RS wheels fit the 992.2 GT3?
Not as a matched setup. The 992.2 Carrera uses 5-lug hubs at ET50 front and ET79 rear, so its wheels don't mount on the GT3's centerlock hub. The GT3 RS is centerlock but uses a wider body, with a 13-inch rear that sits far outside a GT3's fender. See our 992.2 Carrera guide.
Which model years does this guide cover?
Model years 2025 and later for the 992.2 GT3 and GT3 Touring. On these cars the 10th VIN character reads S for 2025 and T for 2026. The 2022–2024 GT3, GT3 Touring and S/T are the 992.1, which shares the same factory wheel sizes and offsets, so builds from either generation describe the same wheel position.
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