What size wheels fit a Audi RS4 B9?

Roughly 8J–9.5J (ET10–ET31).

How many Audi RS4 are there on UK roads?

Approximately 5,870 Audi RS4 are licensed in the UK, according to DfT VEH0124 vehicle-parc data (2025).

Audi RS4 B9 — Wheel Fitment & Specs

By Torque, AIWheelTech vehicle & fitment specialist · 1999–2025

TL;DR — The Audi RS4 B9 (1999–2025) uses a 5x112 bolt pattern, 66.6 mm centre bore, M14x1.5 bolts torqued to ~120 Nm. It accepts ~8J–9.5J wheels at ET10–ET31.

Overview

The Audi RS4 B9 is a high-performance variant of the Audi A4 produced by Audi Sport GmbH for AUDI AG from 2018 to 2025, marking its return after production gaps in previous generations. It sits above the S4 as the most sports-focused model based on the Volkswagen Group's D-segment platform. The RS4 B9 is exclusively available with Audi’s quattro permanent all-wheel drive system and features advanced technology typical of Audi's high-performance lineup.

Wheel fitment

Bolt pattern (PCD)	5x112
Centre bore	66.6 mm
Bolt / thread	M14x1.5 (bolts)
Wheel-bolt torque	120 Nm
Seat type	radius
Factory setup	square
TPMS	indirect

Aftermarket wheel sizes — read per position:

Position	Width	Offset
Front	8J–9.5J	ET10–ET31

As a rule, each extra 1J of width wants roughly +8–10 ET to keep the wheel tucked. The exact offset and any spacer are confirmed by the fit-check.

Browse wheels that fit a Audi RS4 →Get them fitted (UK)

UK popularity & demand

~5,870 Audi RS4 licensed on UK roads — top 17% of models by volume.

Based on DfT VEH0124 vehicle-parc data (2025), there are approximately 5,870 Audi RS4 on UK roads, placing it in the top 17% of car models by volume across our fitment database. That makes its wheel fitment a high-demand size to keep in stock — one reason we track its exact spec here.

Source: DfT/DVLA licensed-vehicle statistics (VEH0124), matched to the AIWheelTech fitment database.

Engines & drivetrain

Variant	Engine	Fuel	Power	Drive
B7 RS4	4.2L V8 FSI	petrol	420 hp	quattro
B5 RS4	2.7L V6 biturbo	petrol	370 hp	quattro

Performance

Variant	Power	0–62 mph	Top speed
B5 RS4	370 hp	4.9 s	155 mph
B7 RS4	420 hp	4.5 s	155 mph

Dimensions

Length	4525 mm
Width	1799 mm
Height	1386 mm
Wheelbase	2607 mm
Kerb weight	1620 kg

Body styles & production

Body styles	Avant (estate/wagon)
Produced	1999–2025

Trim levels

RS4

History & notable variants

The RS4 B9 was introduced in 2018, following a period without production from 2015 to 2018. It continues the tradition of being based on the A4 Avant but introduces significant advancements over its predecessor, including improved aerodynamics and enhanced performance figures.

Reliability & owner notes

Pros: Advanced technology, powerful engine, quattro all-wheel drive system
Cons: Limited production run, high price point