Audi S4 B9 — Wheel Fitment & Specs
Overview
The Audi S4 is the high-performance variant of Audi's compact executive car, the Audi A4. The B9 generation, introduced after 1997, continues this lineage with significant upgrades over previous generations. Built at Audi’s plant in Ingolstadt, Germany, it features a turbocharged 3.0-liter V6 TFSI engine and is available as a four-door sedan and five-door Avant (station wagon). The S4 competes directly against the BMW M340i xDrive and Mercedes-Benz C450 AMG/Mercedes-AMG C43 4MATIC, maintaining Audi's quattro all-wheel drive system. This generation sees improvements in powertrain efficiency, chassis dynamics, and interior technology compared to its predecessor.
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 | 7.5J–8.5J | ET24–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.
UK popularity & demand
Based on DfT VEH0124 vehicle-parc data (2025), there are approximately 8,899 Audi S4 on UK roads, placing it in the top 15% 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 |
|---|---|---|---|---|
| optional 3.0 TFSI with mild hybrid system | 3.0L V6 turbocharged and intercooled petrol engine with mild hyb | petrol | 382 hp | Quattro |
| 3.0 TFSI | 3.0L V6 turbocharged and intercooled petrol engine | petrol | 354 hp | Quattro |
Performance
| Variant | Power | 0–62 mph | Top speed |
|---|---|---|---|
| 3.0 TFSI | 354 hp | 4.7 s | 155 mph |
| optional 3.0 TFSI with mild hybrid system | 382 hp | 4.5 s | 155 mph |
Dimensions
| Length | 4790 mm |
| Width | 1803 mm |
| Height | 1443 mm |
| Wheelbase | 2692 mm |
| Kerb weight | 1730 kg |
Body styles & production
| Body styles | Saloon, Avant |
| Produced | 1991–2025 |
Trim levels
History & notable variants
The B9 generation of the S4 was introduced as a performance-oriented variant of the A4, featuring advanced engine technology and enhanced driving dynamics. It has seen minor updates over time but remains true to Audi's high-performance ethos. Notable for its competitive positioning in the luxury sports sedan segment, it has received positive reviews for its blend of power and handling.
Reliability & owner notes
- Pros: Powerful engine, advanced all-wheel drive system, competitive pricing for performance
- Cons: Higher fuel consumption compared to standard A4 models