Onyx Forged
FREN

Forged wheels for Audi RS4 B9

Onyx Santorin forged wheel

Since 2017

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.

OX-Z10 Santorin forged wheels in satin black on an Audi RS4 Avant (B9)
Illustration: OX-Z10 Santorin in satin black on an Audi RS4 Avant (B9)

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
2017-present

Original fitment measurements: Audi RS4 B9

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, 3, 4]
Centre bore66.5 mm [1, 2, 3, 4]
ThreadM14 x 1.5 [1, 2, 3, 4]
FixingWheel bolts [1, 2, 3, 4]
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
RS 4 Avant (331 kW), records of 2017 and 2018, 19 inches, original equipment19″ [5, 6, 7, 8, 9]9J [5, 6, 7, 8, 9]ET 24 [5, 6, 7, 8, 9]265/35 R19 [5, 6, 7, 8, 9]19″ [5, 6, 7, 8, 9]9J [5, 6, 7, 8, 9]ET 24 [5, 6, 7, 8, 9]265/35 R19 [5, 6, 7, 8, 9]
RS 4 Avant (331 kW), records of 2017 and 2018, 20 inches, original equipment20″ [6, 7, 8, 9]9J [6, 7, 8, 9]ET 26 [6, 7, 8, 9]275/30 R20 [6, 7, 8, 9]20″ [6, 7, 8, 9]9J [6, 7, 8, 9]ET 26 [6, 7, 8, 9]275/30 R20 [6, 7, 8, 9]
RS 4 Avant and RS 4 Avant Competition (331 kW), records of 2019 to 2023, 19 inches, original equipment19″ [10, 11, 12, 13, 14, 15]9J [10, 11, 12, 13, 14, 15]ET 24 [10, 11, 12, 13, 14, 15]265/35 R19 [10, 11, 12, 13, 14, 15]19″ [10, 11, 12, 13, 14, 15]9J [10, 11, 12, 13, 14, 15]ET 24 [10, 11, 12, 13, 14, 15]265/35 R19 [10, 11, 12, 13, 14, 15]
RS 4 Avant and RS 4 Avant Competition (331 kW), records of 2019 to 2023, 20 inches, original equipment20″ [10, 11, 12, 13, 14, 15, 16]9J [10, 11, 12, 13, 14, 15, 16]—275/30 R20 [10, 11, 12, 13, 14, 15, 16]20″ [10, 11, 12, 13, 14, 15, 16]9J [10, 11, 12, 13, 14, 15, 16]—275/30 R20 [10, 11, 12, 13, 14, 15, 16]

“—”: 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 Audi RS4 B9

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 Audi RS4 B9

Frequently asked questions: wheels for the Audi RS4 B9

What are the original offsets for the wheels of an Audi RS 4 Avant B9?

According to its Swiss vehicle type records, the fitments are the same on all four wheels: 9J x 19 with an offset of 24, and 9J x 20 with an offset of 26 in the records of 2017 and 2018. Since 2019, the records permit two offsets for the 9J x 20 wheel, 22 or 26: its box is left empty. [6, 11]

Which tyres, and which load index, does an Audi RS 4 Avant B9 take?

265/35 R19 with a load index of 98, i.e. 750 kg per tyre, or 275/30 R20 with an index of 97, i.e. 730 kg, on all four wheels. [6, 11, 17, 18]

What is the load per wheel on an Audi RS 4 Avant B9?

Its Swiss vehicle type records give a permissible load of 1,210 kg on the front axle in those of 2017 and 2018, 1,225 kg since 2019, and 1,235 kg on the rear axle: i.e. 605 then 612.5 kg per front wheel and 617.5 kg per rear wheel. The 275/30 R20 tyre with a load index of 97 carries 730 kg. [6, 11, 17, 18]

What PCD, centre bore and bolts does an Audi RS 4 Avant B9 use?

The PCD is 5x112, the centre bore 66.5 mm, and the wheels are held by M14 x 1.5 wheel bolts, according to koleso.ee, wheelfitment.eu and SCC. The tightening torque is not published: the sources read do not agree. [1, 2, 3, 4]

Same fixing measurements

As original equipment, these cars have the same PCD, centre bore, thread and fixing as the Audi RS4 B9: PCD 5x112, centre bore 66.5 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, Audi RS4 B9 [2017 .. 2019] (secondary source, consulted on 3 November 2026)
  2. koleso.ee, Audi RS4 B9 Facelift [2019 .. ] (secondary source, consulted on 3 November 2026)
  3. SCC Fahrzeugtechnik (spurverbreiterung.de), Audi RS4, type (B8) - B9, 2017-2024 (secondary source, consulted on 3 November 2026)
  4. wheelfitment.eu, Audi RS4 B9 (2017 - ) (secondary source, consulted on 3 November 2026)
  5. Swiss Federal Roads Office (ASTRA), vehicle type record no. 1AF691 (Audi RS 4 Avant, type B8 (generation B9), 331 kW, September 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. 1AF693 (Audi RS 4 Avant, type B8 (generation B9), 331 kW, September 2017): 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. 1AF694 (Audi RS 4 Avant, type B8 (generation B9), 331 kW, September 2017): 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. 1XS418 (Audi RS 4 Avant, type B8 (generation B9), 331 kW, April 2018): 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. 1XS638 (Audi RS 4 Avant, type B8 (generation B9), 331 kW, June 2018): 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. 1AK766 (Audi RS 4 Avant, type B8 (generation B9), 331 kW, December 2019): 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. 1AP645 (Audi RS 4 Avant, type B8 (generation B9), 331 kW, February 2021): 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. 1AR952 (Audi RS 4 Avant, type B8 (generation B9), 331 kW, July 2022): 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. 1AR956 (Audi RS 4 Avant, type B8 (generation B9), 331 kW, Competition, July 2022): 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. 1XX118 (Audi RS 4 Avant, type B8 (generation B9), 331 kW, September 2021): 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. 1XZ404 (Audi RS 4 Avant, type B8 (generation B9), 331 kW, February 2023): 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. 1AH586 (Audi RS 4 Avant, type B8 (generation B9), 331 kW, February 2019): permitted tyre and wheel combinations (tyre, width x diameter, offset) and axle loads (primary source, consulted on 3 November 2026)
  17. Fiches-auto.fr, tyre load index table (index → kg) (reference table, for a conversion, consulted on 3 October 2026)
  18. 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 Audi RS4 B9

  • Forged 6061-T6 aluminium
  • 5-axis CNC machining
  • Designed to JWL/VIA standards
  • Fitment worked out for your Audi RS4 B9

Audi RS 4 Avant B9: 5x112, a 66.5 mm hub, M14 x 1.5 bolts

The B9-generation Audi RS 4 Avant, with its 331 kW engine, whose first Swiss vehicle type records date from September 2017, is 5x112 on a 66.5 mm hub, with M14 x 1.5 wheel bolts: koleso.ee, wheelfitment.eu and SCC give these measurements, each cited in the table. The sources read do not agree on the tightening torque: we do not publish it.

19 and 20 inches, on all four wheels

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 fitments for the RS 4 Avant that are the same on all four wheels: 9J x 19 at an offset of 24, with 265/35 R19 tyres, and 9J x 20, with 275/30 R20 tyres. For the 20-inch wheel, the records of 2017 and 2018 give an offset of 26; those since 2019 permit two offsets for the same wheel, 22 or 26: lacking a single figure, the box for these records is left empty. The fitment table therefore keeps the two periods apart.

The load the wheel must carry

Its records give a permissible load of 1,210 kg on the front axle in those of 2017 and 2018, then 1,225 kg, and 1,235 kg on the rear axle, i.e. 605 then 612.5 kg per front wheel and 617.5 kg per rear wheel. The tyre keeps at least the load index of the original fitment, 98 for 265/35 R19 and 97 for 275/30 R20 (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 Audi RS 4 Avant B9

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 Audi RS4 B9: free 3D render, on request.

Useful guides

Other Audi RS4 generations

Onyx Forged designs and has wheels made for these generations too. Each one has its own PCD, offsets and sizes: make sure you are on yours.

See all generations of the Audi RS4, or all Audi models.