The S550 Shelby GT350 and GT350R use a 5×114.3 bolt pattern, a 70.5mm center bore and M14×1.5 lug nuts with a 60° conical seat. Factory offsets are ET30 / ET62 on the GT350 and ET24 / ET56 on the GT350R. This guide covers US 2015–2020 models, the 19-inch minimum over the Brembo brakes and the front strut limit on wide wheels.
About this guide: Fitment data is compiled from owner builds on Mustang6G and customer cars in wheel-maker fitment galleries, cross-checked against vendor fitment documentation. Use it as research for your build; ride height, tires, and alignment are still your installer's call.
Pricing forged wheels for your GT350? Full sets from $3,150 in 19″, or $3,400 in 20″.See your exact price →
OEM Setups
Factory Wheel & Tire Configurations
Every GT350 and GT350R shares the hub hardware below and runs 19-inch wheels from the factory, on cast aluminum wheels for the GT350 and carbon-fiber wheels for the GT350R. Every "mm out" figure on the aftermarket cards is measured against the GT350 wheel, 19×10.5 ET30 front and 19×11 ET62 rear, including the 18- and 20-inch cards, since no factory wheel exists at those diameters.
Shelby GT350 / GT350R Hub & Hardware Specs
All trims — 2015-2020
Bolt Pattern5×114.3
Center Bore70.5mm
Fastener TypeLug Nuts
Thread PitchM14×1.5
Seat Type60° conical
Torque Spec150 lb-ft (204 Nm)
Factory OffsetET30 front / ET62 rear GT350 · ET24 front / ET56 rear GT350R
Brake SystemBrembo 6-piston front on 394mm two-piece rotors · 4-piston rear on 380mm rotors · all trims
19″ GT350 Wheel
Standard · GT350
Front Wheel10.5J×19 ET30
Rear Wheel11J×19 ET62
Front Tire295/35ZR19
Rear Tire305/35ZR19
ConstructionCast Aluminum
Applies ToShelby GT350 MY2015–2020, including Track Pack, Technology Pack and the 2020 Heritage Edition
Front and rear wheels are specific and don't swap ends: parts FR3Z-1007-P front and FR3Z-1007-Q rear, about 31 lb each, sold in several finishes. Cars through 2018 came on Michelin Pilot Super Sport tires; 2019–2020 cars got GT350-specific Pilot Sport Cup 2s in the same sizes. This is the reference wheel for every aftermarket card below.
19″ GT350R Carbon Fiber
Standard · GT350R
Front Wheel11J×19 ET24
Rear Wheel11.5J×19 ET56
Front Tire305/30ZR19
Rear Tire315/30ZR19
ConstructionCarbon Fiber
Applies ToShelby GT350R MY2015–2020, including the 2020 Heritage Edition
The first carbon-fiber wheels on a mass-production car, about 18 lb each: parts FR3Z-1007-R front and FR3Z-1007-S rear, on Michelin Pilot Sport Cup 2 tires. Half an inch wider than the GT350 wheel at each end, they sit about 12mm further out front and rear. Most aftermarket staggered builds copy these sizes.
Aftermarket Options
Aftermarket Wheel & Tire Configurations
Each card below is one aftermarket wheel size, and each row on its ladder is one documented build at its effective offset, named by the car it was run on. The Front and Rear figures show how far that build's outer lip sits outside the factory GT350 wheel. The GT350R's own wheels read about 12mm out at both ends.
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.
Every GT350 and GT350R uses Brembo 6-piston front calipers on 394mm rotors, and vendor guides list 19 inches as the minimum; 18-inch wheels need an aftermarket race brake kit. Owners report many 19-inch wheels don't clear the front caliper, and one reported a rear caliper touching an inner barrel. Tell us you have the GT350 brakes when you order so clearance is checked.
Wide fronts and the front strut.
Square 11-inch sets with the rear's ET52 offset need about 20–31mm front spacers and longer studs to clear the strut, which is why most square builds below are listed at those effective offsets. Without spacers, 11-inch fronts are documented at ET24–ET26. The 11.5-inch square needs 31–35mm plus a track alignment.
Lug nuts and stud length.
FMB machines GT350 wheels for 60° conical lug nuts, matching the factory nuts, and bores them to the 70.5mm hub, so hub rings aren't needed. GT350R cars use longer factory studs, so check that your lug nuts suit the stud length. Having a spacer build's offset machined into the wheel avoids spacers and extended studs.
Square Setup
Stance rangeflush → poke
OEM
Aggressive
RWD onlyTrack
Wheels (All 4)
19×11 (Front and Rear)
Documented ET14 – ET32 front · ET50 – ET56 rear
Documented offsetsLip position vs. stock · F 19″ 10.5J ET30 · R 19″ 11J ET62
ET32 / ET52
Via spacersGT350 owner build · customer car in a vendor gallery · ET52 wheels on 20mm front spacers · 295/30R19 Toyo Proxes R888R track tires · listed as needing light modifications
Front4mm outRear10mm out
ET27 / ET52
Via spacersGT350 and GT350R owner builds · 21 cars · customer cars in a vendor gallery · ET52 wheels on 25mm front spacers with longer studs · mostly 305/30R19 Michelin Pilot Super Sport, Pilot Sport Cup 2, Nitto NT01 or Hoosier track tires · Ford Performance lowering springs on some cars · light rubbing reported on one car with 315 slicks; a vendor fitment guide lists the same spacer setup
Front9mm outRear10mm out
ET26 / ET56
Via spacersGT350 owner build · ET56 wheels on 30mm hub-centric front spacers · 305/30R19 Bridgestone Potenza RE-11 all around · set up so tires can rotate on track
Front10mm outRear6mm out
ET26 / ET52
Stock heightGT350 owner builds · three cars · customer cars in a vendor gallery · 305/30R19 Bridgestone Potenza RE-71R · listed as needing no modifications; a vendor fitment guide lists the same spec with no spacers and factory alignment
Front10mm outRear10mm out
ET25 / ET50
Via spacersGT350 owner build · customer car shown on a vendor forum post · ET50 wheels on 25mm front spacers with longer studs · 305/30R19 Goodyear Eagle F1 Supercar 3 · street and track use reported
Front11mm outRear12mm out
ET24 / ET50
GT350 owner build · customer car shown on a vendor forum post · 295/35R19 / 305/35R19 Michelin Pilot Super Sport, the factory tire sizes · suspension not reported
Front12mm outRear12mm out
ET21 / ET52
Via spacersGT350 owner build · customer car in a vendor gallery · ET52 wheels on 31mm front spacers · 305/30R19 Michelin Pilot Sport 4S · listed as a hardcore track setup
Front15mm outRear10mm out
ET14 / ET56
GT350 owner build · wheel specs relayed in an owner thread · front sits noticeably further out than the other rows · tires and suspension not reported
Front22mm outRear6mm out
Sources
Strongly documented
30 community
2 vendor
The most documented GT350 size, almost all on track cars running 305/30R19 all around so tires can rotate. Most builds use ET52 wheels with 25mm front spacers, listed here at ET27. For no spacers, the ET26 / ET52 row is listed as needing no modifications. The ET21 and ET14 rows are the most aggressive front positions.
Stance rangeflush → poke
OEM
Aggressive
RWD onlyDaily
Wheels (All 4)
20×11 (Front and Rear)
Documented ET25 – ET26 front · ET52 – ET62 rear
Tires
305/30R20 (All 4)
Documented offsetsLip position vs. stock · F 19″ 10.5J ET30 · R 19″ 11J ET62
ET26 / ET52
Stock heightGT350 owner builds · two cars · customer cars in a vendor gallery · 305/30R20 all around · listed as needing no modifications; a vendor fitment guide lists the same spec with no spacers and factory alignment
Front10mm outRear10mm out
ET25 / ET62
LoweredGT350 owner build · 305/30R20 Michelin Pilot Sport Cup 2 all around · lowering springs · no rubbing reported
Front11mm outRear0mm out
Sources
Well-documented
3 community
1 vendor
The 20-inch square option, on 305/30R20 all around. Two customer cars and a vendor guide list ET26 / ET52 with no spacers and no modifications. The ET25 / ET62 row pairs an R-style front with the factory rear offset on lowering springs, with no rubbing reported. Ride on 30-series tires is firmer than the factory 35-series.
Stance rangeflush → poke
OEM
Aggressive
RWD onlyTrack
Wheels (All 4)
18×11 (Front and Rear)
Documented ET24 – ET27 front · ET49 – ET52 rear
Tires
315/30R18 (All 4)
Documented offsetsLip position vs. stock · F 19″ 10.5J ET30 · R 19″ 11J ET62
ET27 / ET52
Via spacersRace brake kitGT350 and GT350R owner builds · two cars · customer cars in a vendor gallery · ET52 wheels on 25mm front spacers · 315/30R18 track tires · aftermarket race brakes
Front9mm outRear10mm out
ET27 / ET49
Via spacersRace brake kitGT350 owner build · customer car in a vendor gallery · ET52 wheels on 25mm front and 3mm rear spacers · 315/30R18 Hoosier A7 · aftermarket race brakes and double-adjustable coilovers
Front9mm outRear13mm out
ET24 / ET52
Via spacersRace brake kitVendor fitment guide · 315/30R18 all around · ET52 wheels on 28mm front spacers with longer studs · aftermarket race front brakes required
Front12mm outRear10mm out
Sources
Well-documented
3 community
1 vendor
An 18-inch track square for cars that have swapped to an aftermarket race brake kit; the factory GT350 brakes need 19 inches. Builds run ET52 wheels on 25mm front spacers with 315/30R18 track tires. Only consider it if your car already has race brakes with rotors of about 380mm or smaller.
Stanceflush → poke
OEM
Aggressive
RWD onlyTrack
Wheels (All 4)
19×11.5 (Front and Rear)
Documented ET21 – ET25 front · ET56 rear
Documented offsetsLip position vs. stock · F 19″ 10.5J ET30 · R 19″ 11J ET62
ET25 / ET56
Via spacersGT350 owner builds · three cars · customer cars in a vendor gallery · ET56 wheels on 31mm front spacers · 315/30R19 Continental ExtremeContact Force or Falken Azenis RT660, or 305/30R19 Nankang CR-S · listed as hardcore track setups with extra camber
Front18mm outRear12mm out
ET21 / ET56
Via spacersVendor fitment guide · 305/30R19 or 315/30R19 all around · ET56 wheels on 35mm or larger front spacers with longer studs and a track alignment
Front22mm outRear12mm out
Sources
Well-documented
3 community
1 vendor
A wider 19-inch square on 305/30R19 or 315/30R19 all around. Every build runs ET56 wheels on 31mm or larger front spacers with longer studs, and vendor documentation calls for a track alignment. It suits dedicated track cars rather than daily drivers. Front lips sit about 18–22mm out.
Staggered Setup
Most Popular
Stance rangeflush → poke
OEM
Aggressive
RWD onlyDaily
Front Wheels
19×11
Documented ET24 – ET27
Rear Wheels
19×11.5
Documented ET56
Documented offsetsLip position vs. stock · F 19″ 10.5J ET30 · R 19″ 11J ET62
ET27 / ET56
Via spacersGT350R owner build · customer car in a vendor gallery · ET52 front wheels on 25mm spacers · 305/30R19 / 315/30R19 Falken Azenis RT660
Front9mm outRear12mm out
ET26 / ET56
Stock heightGT350 and GT350R owner builds · five cars · customer cars in a vendor gallery · 305/30R19 with 315/30R19 or 325/30R19 Michelin Pilot Sport 4S or Nitto NT01 · listed as needing no modifications; a vendor fitment guide lists the same spec
Front10mm outRear12mm out
ET24 / ET56
GT350 and GT350R owner builds · four cars · owner threads and customer cars on vendor forum posts · 295/35R19 / 305/35R19 Pilot Super Sport, 305/30R19 / 325/30R19 Pilot Sport 4S, or 305/30R19 / 315/30R19 Pilot Sport Cup 2 · one car on Ford Performance lowering springs with no spacers · one owner reported a rear caliper touching an earlier wheel's inner barrel; vendor fitment documentation lists the same spec
Front12mm outRear12mm out
Sources
Strongly documented
10 community
3 vendor
The GT350R's own factory sizes and the most common street upgrade: 19×11 front, 19×11.5 rear. The ET24 / ET56 row copies the R's carbon wheels and sits about 12mm out at both ends. Most builds run 305/30R19 fronts with 315/30R19 or 325/30R19 rears. Check rear barrel clearance to the caliper on any new wheel design.
Stance rangeflush → poke
OEM
Aggressive
RWD onlyDaily
Front Wheels
20×11
Documented ET15 – ET34
Rear Wheels
20×11.5
Documented ET54 – ET60
Documented offsetsLip position vs. stock · F 19″ 10.5J ET30 · R 19″ 11J ET62
ET34 / ET54
Lowered2020 GT350 owner build · customer car in a vendor gallery · 305/30R20 / 315/30R20 Nitto NT555R · Eibach lowering springs · no rubbing and no modifications reported
Front2mm outRear14mm out
ET28 / ET54
Lowered2020 GT350 owner build · customer car in a vendor gallery · 305/30R20 / 315/30R20 Michelin Pilot Sport 4S · Eibach lowering springs · no rubbing and no modifications reported
Front8mm outRear14mm out
ET24 / ET60
GT350 owner builds · two cars · an owner thread and a customer car in a vendor gallery · 285/30R20 or 295/30R20 fronts with 305/30R20 rears · no rubbing or trimming reported on one car; suspension not reported
Front12mm outRear8mm out
ET24 / ET56
Vendor fitment guide · 295/30R20 to 305/30R20 fronts with 315/30R20 rears
Front12mm outRear12mm out
ET17 / ET56
Lowered2016 GT350 owner builds · two cars · customer cars in a vendor gallery · Michelin Pilot Sport 4S, 305/30R20 / 315/30R20 on one car · Eibach lowering springs on one car, air suspension on the other · slight rub at full steering lock reported on the air-suspension car
Front19mm outRear12mm out
ET15 / ET60
Lowered2017 GT350 owner build · customer car in a vendor gallery · 295/30R20 / 315/30R20 Michelin Pilot Sport 4S · H&R lowering springs · no rubbing and no modifications reported
Front21mm outRear8mm out
Sources
Well-documented
7 community
1 vendor
The most documented 20-inch setup, mostly on lowered street cars with 295–305/30R20 fronts and 315/30R20 rears. Rears cluster at ET54–ET60, while fronts range widely, from ET34 near stock position to ET15 at about 21mm out. If your car is at stock height, start from the top rows; one air-suspension car reported a slight rub at full lock.
Stanceflush → poke
OEM
Aggressive
RWD onlyShow
Front Wheels
20×10 ET15
Rear Wheels
20×11 ET45
Documented buildLip position vs. stock · F 19″ 10.5J ET30 · R 19″ 11J ET62
ET15 / ET45
Lowered2016 GT350 owner build · customer car in a vendor gallery · 285/35R20 / 305/35R20 Nitto NT555 G2 · air suspension · fenders rolled, no rubbing reported
Front9mm outRear17mm out
Sources
Documented
1 community
A narrower 20-inch stagger on a show-style build: a 10-inch front pushed out with a low ET15 offset and an 11-inch rear. The documented car sits on air suspension with the fenders rolled, so treat it as a lowered-car setup. Against the factory 10.5-inch front it reads about 9mm out.
★★★★★
Was this guide helpful?
Let us know how we did on Google.
Your feedback helps other owners find these free fitment guides. It takes about 30 seconds.
Built to the exact spec, not the closest one on a shelf. The setups above come from real Shelby GT350 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 Shelby GT350 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 Shelby GT350: 5×114.3 bolt pattern, bored to the 70.5mm hub, machined for 60° conical lug nuts, 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 wheels and tires come stock on the Shelby GT350 and GT350R?
The GT350 runs cast aluminum 19×10.5 ET30 front and 19×11 ET62 rear wheels on 295/35ZR19 and 305/35ZR19 tires. The GT350R runs carbon-fiber 19×11 ET24 front and 19×11.5 ET56 rear wheels on 305/30ZR19 and 315/30ZR19 Michelin Pilot Sport Cup 2 tires. Both are staggered, and front and rear wheels aren't interchangeable.
What are the GT350 bolt pattern, center bore and lug nut torque?
Every GT350 and GT350R uses a 5×114.3 bolt pattern, a 70.5mm center bore and M14×1.5 lug nuts with a 60° conical seat, torqued to 150 lb-ft (204 Nm) per Ford. FMB machines wheels for conical-seat lug nuts and bores them to the 70.5mm hub, so hub rings aren't needed. Confirm the torque in your owner's manual.
What aftermarket wheel sizes fit a GT350 at stock ride height?
The most documented upgrade is the GT350R's own sizing, 19×11 ET24–ET26 front and 19×11.5 ET56 rear, which owners and vendor guides list with no spacers and the factory alignment. Square 19×11 ET26 / ET52 on 305/30R19 is also documented with no modifications. Wider or deeper front offsets usually bring spacers or extra camber.
What's the difference between flush and aggressive fitment, and how do I read the offset ladder?
Each card is one wheel size and each row is one documented build at its effective offset. The Front and Rear figures show how far the outer lip sits outside the factory GT350 wheel. The GT350R wheel reads about 12mm out at both ends. Most 19-inch street builds sit 9–12mm out, 20-inch builds 2–21mm, and track squares up to about 22mm at the front.
Will 18-inch wheels clear the GT350 brakes?
No. The GT350 and GT350R use Brembo 6-piston front calipers on 394mm two-piece rotors, and vendor guides list 19 inches as the minimum with the factory brakes. 18-inch track setups are documented only on cars with aftermarket race brake kits, shown on their own card. Even many 19-inch wheels don't clear, so tell us your brakes when you order.
Should I run a square or staggered setup on a GT350?
Square 19×11 sets on 305/30R19 let you rotate tires and are popular on track cars, but they usually need front spacers or a lower ET26 front offset to clear the strut. Staggered setups at the GT350R's 19×11 / 19×11.5 sizes keep stock-like balance and fit without spacers. Keep overall diameters close to stock either way.
Should I use wheel spacers?
Owners use 20–35mm front spacers with longer studs to run square ET52 or ET56 wheels on track cars. Spacer builds appear here at their effective offset, the wheel offset minus the spacer, so an ET52 wheel on a 25mm spacer is listed as ET27. FMB machines that offset into the wheel, so no spacer or extended studs are needed.
What are the best winter wheel options?
There's no factory winter wheel, and 18-inch wheels won't clear the brakes. Owners report most 19-inch wheels from other Mustangs don't clear either, so a common choice is a second set of factory GT350 wheels with winter tires, or a narrower 19-inch wheel confirmed to clear the 6-piston caliper. Tell us it's a winter set.
Which model years and models does this guide cover?
US-market Shelby GT350 and GT350R for model years 2015–2020, including the Track Pack and Technology Pack and the 2020 Heritage Edition. The 2015 model year was a short run of 137 cars, 37 of them GT350Rs. The 2020 GT500 has larger brakes and 20-inch wheels and isn't covered here.
Do regular Mustang or GT500 wheels fit the GT350?
The bolt pattern, bore and lug nuts match the 2015–2023 Mustang and the GT500, but the GT350 has wider front fenders and larger brakes. Most regular Mustang wheels are too narrow and don't clear the GT350 calipers. GT500 factory wheels are 20-inch, which owners report at about ET32 front and ET50 rear, so check caliper and fender fit first.
More Guides
Explore More Fitment Guides
Guides for other platforms, built the same way from OEM data and real owner builds.
Chevrolet Corvette C8 Stingray (2020-2026) Wheel Fitment Guide
