Onyx Forged
FREN

Forged wheels for Mercedes AMG GT C190 and R190

Onyx Kyoto forged wheel

2014 – 2021

All our wheels in 19, 20 and 21″, made to your car's measurements. From €3,200 for a set of 4 in 19″. Free delivery to 35 European countries.

Great Britain: from £3,271.20 with UK import VAT, delivery included

Sizes offered: 19″ · 20″ · 21″. Prices below in 20″.

Our 45 wheels and their prices

Amounts in pounds: our checkout on 13 November 2026, for the wheels, delivery included (free), before the carrier's clearance fee and any import duty. The amount shown at checkout is the one charged for your order.

Exact measurements, offset, staggered fitment, concavity, another finish or diameter? Our workshop sets it all up with you. Contact the workshop

Technical specifications

Production period
2014-2021

Original fitment measurements: Mercedes AMG GT C190 and R190

The measurements of the car as delivered new, to identify yours and compare. Each value refers, by a number, to the sources that give it. Our design office works out your offset and submits it to you before machining.

Hub

MeasurementOriginal value
PCD (bolt pattern)5x112 [1, 2]
Centre bore66.6 mm [1, 2]
ThreadM14 x 1.5 [1, 2]
FixingWheel bolts [1, 2]
Bolt or nut seatNot published
Tightening torqueNot published

“Not published”: no source sure enough to show it yet.

Original fitments by version

Version and fitmentFrontRear
DiameterWidthOriginal offset (manufacturer)TyreDiameterWidthOriginal offset (manufacturer)Tyre
AMG GT, coupé and roadster (340 to 390 kW), 19 inches, staggered fitment, original equipment19″ [3, 4, 5, 6, 7]9J [3, 4, 5, 6, 7]ET 58 [3, 4, 5, 6, 7]255/35 R19 [3, 4, 5, 6, 7]19″ [3, 4, 5, 6, 7]11J [3, 4, 5, 6, 7]ET 68 [3, 4, 5, 6, 7]295/35 R19 [3, 4, 5, 6, 7]
AMG GT, coupé and roadster (340 to 390 kW), 19 and 20 inches, staggered fitment, original equipment19″ [3, 4, 5, 6, 7]9J [3, 4, 5, 6, 7]—265/35 R19 [3, 4, 5, 6, 7]20″ [3, 4, 5, 6, 7]11J [3, 4, 5, 6, 7]ET 68 [3, 4, 5, 6, 7]295/30 R20 [3, 4, 5, 6, 7]
AMG GT S, coupé and roadster (375 and 384 kW), 19 and 20 inches, staggered fitment, original equipment19″ [8, 9, 10, 11]9J [8, 9, 10, 11]—265/35 R19 [8, 9, 10, 11]20″ [8, 9, 10, 11]11J [8, 9, 10, 11]ET 68 [8, 9, 10, 11]295/30 R20 [8, 9, 10, 11]
AMG GT C, coupé and roadster (410 kW), 19 and 20 inches, staggered fitment, original equipment19″ [12, 13, 14, 15]9J [12, 13, 14, 15]ET 61 [12, 13, 14, 15]265/35 R19 [12, 13, 14, 15]20″ [12, 13, 14, 15]12J [12, 13, 14, 15]ET 46 [12, 13, 14, 15]305/30 R20 [12, 13, 14, 15]
AMG GT R, coupé and roadster (430 kW), 19 and 20 inches, staggered fitment, original equipment19″ [16, 17, 18]10J [16, 17, 18]ET 56 [16, 17, 18]275/35 R19 [16, 17, 18]20″ [16, 17, 18]12J [16, 17, 18]ET 52 [16, 17, 18]325/30 R20 [16, 17, 18]

“—”: no source sure enough to show it yet. The offsets are the original ones, given by the manufacturer or by the sources cited; they help you identify your car's fitment.

What Onyx can make for the Mercedes AMG GT C190 and R190

Custom forged wheels in forged 6061-T6 aluminium, designed to JWL/VIA standards, in monoblock or two-piece construction; three-piece wheels are made on quotation.

The diameters below start at the smallest original diameter recorded on this car (19″) and go up to 24″.

DiameterMonoblock, set of four wheelsTwo-piece, set of four wheels
19″€3,200
Great Britain: £3,271.20 with UK import VAT		€4,300
Great Britain: £4,395.60 with UK import VAT
20″€3,300
Great Britain: £3,373.20 with UK import VAT		€4,400
Great Britain: £4,497.60 with UK import VAT
21″€3,550
Great Britain: £3,628.80 with UK import VAT		€4,750
Great Britain: £4,855.20 with UK import VAT
22″€3,750
Great Britain: £3,832.80 with UK import VAT		€5,200
Great Britain: £5,314.80 with UK import VAT
23″€3,950
Great Britain: £4,038 with UK import VAT		€5,750
Great Britain: £5,877.60 with UK import VAT
24″€4,100
Great Britain: £4,190.40 with UK import VAT		€6,300
Great Britain: £6,439.20 with UK import VAT

Amounts in pounds: our checkout on 13 November 2026, for the wheels, delivery included (free), before the carrier's clearance fee and any import duty. The amount shown at checkout is the one charged for your order.

Wheels delivered in 4 to 8 working weeks, transit time included, from full payment, whether you order on the website or on quotation (or from the agreed deposit, if you asked for one), and at the earliest from your approval of the measurements, the colour or the 3D render you asked for, under article 5.1 of the Terms and Conditions.

Free delivery to 35 European countries (Terms and Conditions, article 5.2).

The offset and width of your wheels do not come from a table: the Onyx Forged design office calculates them for your car and your brakes, and submits them to you before machining.

Configure wheels for the Mercedes AMG GT C190 and R190

Frequently asked questions: wheels for the Mercedes AMG GT C190 and R190

What are the original offsets for the wheels of a Mercedes-AMG GT C190?

A staggered fitment, according to its Swiss vehicle type records. AMG GT: 9J x 19 with an offset of 58 at the front and 11J x 19 with an offset of 68 at the rear, or 9J x 19 at the front and 11J x 20 with an offset of 68 at the rear. AMG GT C: 9J x 19 with an offset of 61 and 12J x 20 with an offset of 46. AMG GT R: 10J x 19 with an offset of 56 and 12J x 20 with an offset of 52. On the AMG GT and the AMG GT S, the 9J x 19 front wheel paired with the 20-inch rear wheel has two permitted offsets, 61 or 62: its box is left empty. [3, 8, 12, 16]

Which tyres, and which load index, does a Mercedes-AMG GT C190 take?

AMG GT: 255/35 R19 with a load index of 96 at the front, i.e. 710 kg per tyre, and 295/35 R19 with an index of 104 at the rear, i.e. 900 kg; or 265/35 R19 with an index of 98, i.e. 750 kg, and 295/30 R20 with an index of 101, i.e. 825 kg, like the AMG GT S. AMG GT C: 265/35 R19 and 305/30 R20 with an index of 103, i.e. 875 kg. AMG GT R: 275/35 R19 with an index of 100, i.e. 800 kg, and 325/30 R20 with an index of 106, i.e. 950 kg. These are XL (reinforced) tyres. [3, 8, 12, 16, 19, 20]

What is the load per wheel on a Mercedes-AMG GT C190?

Its Swiss vehicle type records give the coupé a permissible load of 815 to 905 kg on the front axle and 985 to 1,075 kg on the rear axle, i.e. 407.5 to 452.5 kg per front wheel and 492.5 to 537.5 kg per rear wheel; the roadster, 840 to 930 and 1,010 to 1,100 kg, i.e. 420 to 465 and 505 to 550 kg per wheel. The engine is at the front and the gearbox at the rear: the rear carries the most. The 295/35 R19 rear tyre with a load index of 104 carries 900 kg. [3, 5, 19, 20]

What PCD, centre bore and bolts does a Mercedes-AMG GT C190 use?

The PCD is 5x112, the centre bore 66.6 mm, and the wheels are held by M14 x 1.5 wheel bolts, according to koleso.ee and SCC. The tightening torque is not published: only one of the sources read gives it. [1, 2]

Same fixing measurements

As original equipment, these cars have the same PCD, centre bore, thread and fixing as the Mercedes AMG GT C190 and R190: PCD 5x112, centre bore 66.6 mm, thread M14 x 1.5, fixing: wheel bolts.

Same fixing measurements; original diameters and offsets: see each car's page. Bolt seat, width and brake clearance: our design office checks them for your car before machining.

Sources for the measurements and answers

  1. koleso.ee, Mercedes-Benz AMG GT BR190 [2014 .. 2023] (secondary source, consulted on 3 November 2026)
  2. SCC Fahrzeugtechnik (spurverbreiterung.de), Mercedes-Benz AMG GT, type X290 (190), 2014-2021 (secondary source, consulted on 3 November 2026)
  3. Swiss Federal Roads Office (ASTRA), vehicle type record no. 1MQ639 (Mercedes-AMG GT, type 197, AMG GT coupé, 340 kW, August 2014): permitted tyre and wheel combinations (tyre, width x diameter, offset) and axle loads (primary source, consulted on 3 November 2026)
  4. Swiss Federal Roads Office (ASTRA), vehicle type record no. 1MQ682 (Mercedes-AMG GT, type 197, AMG GT coupé, 350 kW, March 2017): permitted tyre and wheel combinations (tyre, width x diameter, offset) and axle loads (primary source, consulted on 3 November 2026)
  5. Swiss Federal Roads Office (ASTRA), vehicle type record no. 1MQ683 (Mercedes-AMG GT, type 197, AMG GT roadster, 350 kW, March 2017): permitted tyre and wheel combinations (tyre, width x diameter, offset) and axle loads (primary source, consulted on 3 November 2026)
  6. Swiss Federal Roads Office (ASTRA), vehicle type record no. 1MQ766 (Mercedes-AMG GT, type 197, AMG GT coupé, 390 kW, July 2020): permitted tyre and wheel combinations (tyre, width x diameter, offset) and axle loads (primary source, consulted on 3 November 2026)
  7. Swiss Federal Roads Office (ASTRA), vehicle type record no. 1MQ767 (Mercedes-AMG GT, type 197, AMG GT roadster, 390 kW, July 2020): permitted tyre and wheel combinations (tyre, width x diameter, offset) and axle loads (primary source, consulted on 3 November 2026)
  8. Swiss Federal Roads Office (ASTRA), vehicle type record no. 1MQ640 (Mercedes-AMG GT, type 197, AMG GT S coupé, 375 kW, August 2014): permitted tyre and wheel combinations (tyre, width x diameter, offset) and axle loads (primary source, consulted on 3 November 2026)
  9. Swiss Federal Roads Office (ASTRA), vehicle type record no. 1XK414 (Mercedes-AMG GT, type 197, AMG GT S coupé, 375 kW, April 2015): permitted tyre and wheel combinations (tyre, width x diameter, offset) and axle loads (primary source, consulted on 3 November 2026)
  10. Swiss Federal Roads Office (ASTRA), vehicle type record no. 1MQ686 (Mercedes-AMG GT, type 197, AMG GT S coupé, 384 kW, March 2017): permitted tyre and wheel combinations (tyre, width x diameter, offset) and axle loads (primary source, consulted on 3 November 2026)
  11. Swiss Federal Roads Office (ASTRA), vehicle type record no. 1MQ705 (Mercedes-AMG GT, type 197, AMG GT S roadster, 384 kW, June 2018): permitted tyre and wheel combinations (tyre, width x diameter, offset) and axle loads (primary source, consulted on 3 November 2026)
  12. Swiss Federal Roads Office (ASTRA), vehicle type record no. 1MQ684 (Mercedes-AMG GT, type 197, AMG GT C coupé, 410 kW, March 2017): permitted tyre and wheel combinations (tyre, width x diameter, offset) and axle loads (primary source, consulted on 3 November 2026)
  13. Swiss Federal Roads Office (ASTRA), vehicle type record no. 1MQ685 (Mercedes-AMG GT, type 197, AMG GT C roadster, 410 kW, March 2017): permitted tyre and wheel combinations (tyre, width x diameter, offset) and axle loads (primary source, consulted on 3 November 2026)
  14. Swiss Federal Roads Office (ASTRA), vehicle type record no. 1MQ768 (Mercedes-AMG GT, type 197, AMG GT C coupé, 410 kW, July 2020): permitted tyre and wheel combinations (tyre, width x diameter, offset) and axle loads (primary source, consulted on 3 November 2026)
  15. Swiss Federal Roads Office (ASTRA), vehicle type record no. 1MQ769 (Mercedes-AMG GT, type 197, AMG GT C roadster, 410 kW, July 2020): permitted tyre and wheel combinations (tyre, width x diameter, offset) and axle loads (primary source, consulted on 3 November 2026)
  16. Swiss Federal Roads Office (ASTRA), vehicle type record no. 1MQ681 (Mercedes-AMG GT, type 197, AMG GT R coupé, 430 kW, January 2017): permitted tyre and wheel combinations (tyre, width x diameter, offset) and axle loads (primary source, consulted on 3 November 2026)
  17. Swiss Federal Roads Office (ASTRA), vehicle type record no. 1MQ754 (Mercedes-AMG GT, type 197, AMG GT R roadster, 430 kW, June 2019): permitted tyre and wheel combinations (tyre, width x diameter, offset) and axle loads (primary source, consulted on 3 November 2026)
  18. Swiss Federal Roads Office (ASTRA), vehicle type record no. 1MQ770 (Mercedes-AMG GT, type 197, AMG GT R coupé, 430 kW, July 2020): permitted tyre and wheel combinations (tyre, width x diameter, offset) and axle loads (primary source, consulted on 3 November 2026)
  19. Fiches-auto.fr, tyre load index table (index → kg) (reference table, for a conversion, consulted on 3 October 2026)
  20. UN Regulation No 30 (revision 3), Annex IV, tyre load capacity index table (index → kg), OJ L 201 of 30/07/2008 (reference table, for a conversion, consulted on 3 November 2026)

Each measurement shown comes from a cited source: a manufacturer's document, an official vehicle type record, an original parts catalogue, or two concurring specialist sources. Measurements checked on 3 November 2026 by the Onyx Forged design office.

Custom forged wheels for the Mercedes AMG GT C190 and R190

  • Forged 6061-T6 aluminium
  • 5-axis CNC machining
  • Designed to JWL/VIA standards
  • Fitment worked out for your Mercedes AMG GT C190 and R190

Mercedes-AMG GT C190: 5x112, a 66.6 mm hub, M14 x 1.5 bolts

The first-generation Mercedes-AMG GT, as a coupé (C190) and as a roadster (R190), whose first Swiss vehicle type records date from August 2014, is 5x112 on a 66.6 mm hub, with M14 x 1.5 wheel bolts: koleso.ee and SCC give these measurements, each cited in the table. Only one of the sources read gives the tightening torque: we do not publish it.

A staggered fitment, from the AMG GT to the AMG GT R

The vehicle type record of the Swiss Federal Roads Office (ASTRA), the document that sets the tyre and wheel combinations a car may carry, permits a staggered fitment for the AMG GT, wider at the rear, which changes from one version to the next. The AMG GT has 9J x 19 at an offset of 58 at the front and 11J x 19 at an offset of 68 at the rear, with 255/35 R19 and 295/35 R19 tyres, or an 11J x 20 rear wheel, at the same offset of 68, with 295/30 R20 tyres. The AMG GT C moves to 12J x 20 at an offset of 46 at the rear, with 305/30 R20 tyres, and 9J x 19 at an offset of 61 at the front; the AMG GT R to 10J x 19 at an offset of 56 at the front and 12J x 20 at an offset of 52 at the rear, with 275/35 R19 and 325/30 R20 tyres. On the AMG GT and the AMG GT S, the 9J x 19 front wheel that goes with the 20-inch rear wheel has two permitted offsets, 61 or 62: lacking a single figure, its box is left empty.

The load the wheel must carry

The engine is at the front and the gearbox at the rear: the rear carries the most. The records give the coupé a permissible load of 815 to 905 kg on the front axle and 985 to 1,075 kg on the rear axle, i.e. 407.5 to 452.5 kg and 492.5 to 537.5 kg per wheel; the roadster carries a little more, 840 to 930 and 1,010 to 1,100 kg. The rear tyre keeps at least the load index of the original fitment, 104 for 295/35 R19 (reading a tyre). The braking system limits the smallest possible wheel diameter: the guide wheels and brakes explains why.

What these measurements say about a forged wheel

The offset positions the wheel in the wheel arch: a wider wheel, or a lower offset, brings it closer to the wing. The Onyx Forged design office starts from the measurements on this page, your brakes and your tyres to calculate the width and offset of your wheels, then submits them to you. The offset calculator compares two fitments: it compares, it does not choose the measurement for you.

Roadworthiness test: what is examined

The French roadworthiness test (contrôle technique) examines the wheel without removing it (cracks, deformation, a wheel that protrudes beyond the bodywork) and verifies that the tyre size is one provided for by the manufacturer or accepted as equivalent. Keeping a tyre size from the original fitment, and at least its load index, avoids having to justify it; the details are on the roadworthiness test and registration page.

What we record before machining

Configure your forged wheels for the Mercedes-AMG GT (C190 and R190)

The Onyx Forged design office works out the measurements of your car from its exact version, stated on the registration document, and shows them to you before machining. Each set is cut from forged 6061-T6 aluminium, machined on a 5-axis CNC centre, as monoblock, two-piece or three-piece wheels; our wheels are designed to JWL/VIA standards. Prices by diameter and the lead time are given on this page, under “What Onyx can make”. Start your configuration or write to contact@onyxforgedwheels.com.

Configure custom wheels for your Mercedes AMG GT C190 and R190: free 3D render, on request.

Useful guides

See all generations of the Mercedes AMG GT, or all Mercedes models.