What size wheels fit a Audi A4 B9?

Roughly 6.5J–8.5J (ET18–ET45).

How many Audi A4 are there on UK roads?

Approximately 242,314 Audi A4 are licensed in the UK, according to DfT VEH0124 vehicle-parc data (2025).

Audi A4 B9 — Wheel Fitment & Specs

By Torque, AIWheelTech vehicle & fitment specialist · 1994–2025

TL;DR — The Audi A4 B9 (1994–2025) uses a 5x112 bolt pattern, 66.6 mm centre bore, M14x1.5 bolts torqued to ~120 Nm. It accepts ~6.5J–8.5J wheels at ET18–ET45.

Overview

The Audi A4 is a line of luxury compact executive cars produced from 1994 to 2025 by the German car manufacturer Audi, a subsidiary of the Volkswagen Group. The B8 and B9 versions are built on the Volkswagen Group MLB platform shared with several models and brands across the Volkswagen Group. Available as a sedan and station wagon, it features front-engine design with transaxle-type transmissions mounted at the rear of the engine. Cars are front-wheel drive or equipped with Audi's quattro all-wheel drive system.

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	6.5J–8.5J	ET18–ET45

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 A4 →Get them fitted (UK)

UK popularity & demand

~242,314 Audi A4 licensed on UK roads — top 1% of models by volume.

Based on DfT VEH0124 vehicle-parc data (2025), there are approximately 242,314 Audi A4 on UK roads, placing it in the top 1% 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
2.7L V6 30v Biturbo	2.7L V6 engine	petrol	265 hp	quattro
2.8L V6 30v DOHC	2.8L V6 engine	petrol	193 hp	quattro
2.8L V6 12v SOHC	2.8L V6 engine	petrol	174 hp	quattro
2.4L V6 30v DOHC BDV Engine	2.4L V6 engine	petrol	165 hp	quattro
1.8T I4 20v DOHC Turbo	1.8L Straight-four engine	petrol	150 hp	quattro
2.6L V6 12v SOHC	2.6L V6 engine	petrol	150 hp	quattro
2.5L V6 24v DOHC TDI	2.5L V6 engine	diesel	150 hp	quattro
1.8L I4 20v DOHC	1.8L Straight-four engine	petrol	125 hp	FWD
1.9L I4 8v SOHC PD TDI	1.9L Straight-four engine	diesel	115 hp	quattro
1.6L I4 8v SOHC	1.6L Straight-four engine	petrol	101 hp	FWD
1.9L I4 8v SOHC TDI	1.9L Straight-four engine	diesel	75 hp	quattro

Performance

Variant	Power	0–62 mph	Top speed
1.6L I4 8v SOHC	101 hp	11.9 s	118 mph
1.8L I4 20v DOHC	125 hp	10.5 s	127 mph
1.8T I4 20v DOHC Turbo	150 hp	8.3 s	139 mph
2.4L V6 30v DOHC BDV Engine	165 hp	8.4 s	137 mph
2.6L V6 12v SOHC	150 hp	9.1 s	134 mph
2.7L V6 30v Biturbo	265 hp	5.7 s	154 mph
2.8L V6 12v SOHC	174 hp	8.2 s	139 mph
2.8L V6 30v DOHC	193 hp	7.4 s	145 mph
1.9L I4 8v SOHC TDI	75 hp		98 mph
1.9L I4 8v SOHC PD TDI	115 hp	10.5 s	114 mph
2.5L V6 24v DOHC TDI	150 hp	9 s	130 mph

Body styles & production

Body styles	Sedan, Avant
Produced	1994–2025

Trim levels

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Factory colours

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History & notable variants

The B9 generation A4 is part of Audi's move into luxury compact executive cars, following previous generations since 1994. It has been manufactured in Ingolstadt and Aurangabad (India) by Audi India since 2007. The B9 will be replaced by the B10 version of the Audi A5.

Reliability & owner notes

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Cons: null
Common issues: null