Silver Round-Hole Steelie-Style Forged Wheels
Monoblock · Silver
1991 Audi 80 / 100 (All) Wheels & Rims: Bolt Pattern, Offset & Sizes
Fitting Audi 80 / 100 (All) wheels? This page gives the 1991 Audi 80 / 100 (All) bolt pattern (4x108), centre bore, factory rim size and the offset range for aftermarket and forged Audi 80 / 100 (All) rims: the same spec sheet ANKUSI uses when machining forged wheels for this car.
Quick answer: The 1991 Audi 80 / 100 (All) uses a 4x108 bolt pattern with a 57.1 mm centre bore and M14x1.5 lug bolts. Factory wheels: 15x6.0J, front and rear. For aftermarket wheels, 16x7.0J ET25 sits flush and 17x7.5J ET20 is the most aggressive fit.
Forged wheels for the 1991 Audi 80 / 100 (All) — drilled 4x108 with a 57.1 mm centre bore, built to the offset you choose. From $220 per wheel, made to order in 20–25 days.
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Audi 80 / 100 (All) (1991): 4x108 bolt pattern, 57.1mm center bore. Factory wheels: 15x6.0J F/R. Reference fitment ranges.
Bolt Pattern4x108
Wheel Bolt/NutM14x1.5 Bolt
Center Bore57.1mm
Wheel Load Rating650–750 kg/wheel (Standard Passenger Car segment reference)
Year1991
CategorySedan/Wagon
✓ Data check: the bolt pattern and center bore on this page match an independent fitment reference. Last reviewed September 18, 2026. How we verify
Wheel Size & Offset at a Glance
| Configuration | Wheel Size & Offset |
|---|---|
| Factory (OE) | 15x6.0J F/R |
| Flush Fitment | 16x7.0J at ET25 offset |
| Maximum Aggressive | 17x7.5J at ET20 offset |
Forged Wheel Designs for the Audi 80 / 100 (All)
Every design below is forged to order, so it can be machined to the Audi 80 / 100 (All)'s 4x108 bolt pattern and 57.1 mm center bore, with the width and offset calculated for your setup.
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How to Read Wheel Offset & Measurements
Use these two references before ordering: the left diagram shows where each spec (PCD, center bore, offset, width and diameter) is measured on the wheel; the right diagram shows how positive, zero and negative offset shift the wheel face relative to the hub centerline.
ANKUSI Engineering Expert Advice
Wagons split the difference between sedan agility and load-carrying duty, and the wheels have to serve both roles. A forged wheel holds the same structural margin as the factory piece while trimming rotational weight, which benefits both the empty-car handling and the loaded-car ride.
The Audi 80 / 100 (All) runs a 4x108 bolt pattern, 57.1mm center bore, and a 15x6.0J, front and rear, wheel from the factory. Our Flush Fitment reference is 16x7.0J ET25, which tucks the tire under the fender lip on a stock-height Audi 80 / 100 (All). Our Maximum Aggressive reference is 17x7.5J ET20 — beyond that offset, expect rubbing against the inner fender liner under compression without further trimming.
Audi 80 / 100 (All) OE Wheel Specs
The 1991 Audi 80 / 100 (All) (Sedan/Wagon) uses a 4x108 bolt pattern with a 57.1mm center bore. Factory wheels are 15x6.0J F/R.
Why the factory spec works for most owners:
- Balances ride comfort with everyday fuel efficiency
- A widely used size in this segment, so tire and wheel availability stays strong
- Keeps unsprung weight low for stable, predictable handling
- Maintains clearance for the factory brake calipers and suspension components
ANKUSI builds these wheels — we are the forging factory, not a reseller. For the Audi 80 / 100 (All) (1991) we drill the 4x108 pattern and cut the centre bore to 57.1mm on our own CNC line, so the wheel hub-centres on the car with no spacer rings, in whatever diameter, width and offset you specify.
Converting these ET figures to backspacing? Use the wheel offset and backspacing calculator.
The figures on this page are part of our open wheel fitment dataset — 10,093 vehicles, free to download, CC BY 4.0.
Offset & Backspacing Reference
Backspacing is calculated as wheel width (in) ÷ 2 + offset (mm) ÷ 25.4 + 0.5 (flange allowance):
- OE: 15x6.0J ET37 → ~4.96″ backspacing
- Flush: 16x7.0J ET25 → ~4.98″ backspacing
- Max: 17x7.5J ET20 → ~5.04″ backspacing
Want to check a different width or offset before you order? Use our Offset & Backspacing Calculator to solve the numbers yourself, or looking for your exact Audi spec, or want a wheel built to a custom offset for your Audi 80 / 100 (All)? Contact ANKUSI with your bolt pattern and offset target and we will confirm the correct forged wheel spec for your build.
Vehicles With the Same Hub as the Audi 80 / 100 (All) (4x108, 57.1 mm Bore)
In our database, 6 other vehicle entries from 2 makes use exactly the same 4x108 bolt pattern and 57.1 mm center bore. Factory wheels from these cars bolt on and center on the hub without rings; offset and width still have to be checked.
4x108 is used by 2.6% of the vehicle pages in our English fitment guide (171 of 6,503); 4.1% of those also use a 57.1 mm center bore.
Hub-Centric Rings for a 57.1 mm Center Bore
A wheel with a center bore larger than 57.1 mm needs a hub-centric ring. The most common combinations:
| Wheel bore | Ring size |
|---|---|
| 60.1 mm | 60.1 → 57.1 mm |
| 63.4 mm | 63.4 → 57.1 mm |
| 64.1 mm | 64.1 → 57.1 mm |
| 65.1 mm | 65.1 → 57.1 mm |
| 73.1 mm | 73.1 → 57.1 mm |
ANKUSI forged wheels are bored to exactly 57.1 mm for this vehicle, so no ring is needed.
Frequently Asked Questions
What bolt pattern (PCD) does the Audi 80 / 100 (All) use?
The 1991 Audi 80 / 100 (All) uses a 4x108 bolt pattern.
How many lug bolts does the Audi 80 / 100 (All) use?
The Audi 80 / 100 (All) uses a 4-lug bolt pattern (4x108), so you need a 4-lug forged wheel to bolt straight on.
What is the center bore size on the Audi 80 / 100 (All)?
The Audi 80 / 100 (All)'s center bore is 57.1mm. If an aftermarket wheel has a larger center bore than this, hub-centric rings are recommended so the wheel centers on the hub itself rather than relying on the lug bolts alone.
What size are the factory (stock) wheels on the Audi 80 / 100 (All)?
Factory wheels on the Audi 80 / 100 (All) are 15x6.0J F/R.
What is the biggest wheel size I can fit on my Audi 80 / 100 (All) without rubbing?
The most aggressive fitment we recommend without fender work is 17x7.5J at ET20 offset. Going beyond this typically causes rubbing under compression unless you roll the fenders or add camber correction.
What does a flush wheel fitment look like on the Audi 80 / 100 (All)?
For a flush look with minimal to no rubbing, we recommend 16x7.0J at ET25 offset as a starting point on a stock or mildly lowered Audi 80 / 100 (All).
Do I need wheel spacers for my Audi 80 / 100 (All)?
No. ANKUSI forges each wheel to your exact target offset, including the flush or max specs above, so you get the correct fitment without stacking spacers. Spacers are typically only used to push out an existing OE-offset wheel without replacing it, which isn't necessary when you're ordering a custom-offset forged wheel.
How do I calculate wheel backspacing for my Audi 80 / 100 (All)?
Backspacing (in inches) = wheel width (in) ÷ 2 + offset (mm) ÷ 25.4 + 0.5 (flange allowance). For example, the flush spec above works out to roughly 4.98" of backspacing.
What's the difference between wheel offset and backspacing?
Offset is the distance in millimeters from the wheel's true centerline to its mounting face (positive offset pulls the wheel in, negative pushes it out). Backspacing is the distance in inches from the mounting face to the back edge of the wheel barrel. They describe the same fitment from two different reference points, which is why ANKUSI lists both above — some shops and tuning guides quote offset, others quote backspacing.
Can I run staggered wheels (different sizes front and rear) on my Audi 80 / 100 (All)?
The Audi 80 / 100 (All) runs the same wheel size front and rear from the factory, so staggered fitment is not required. ANKUSI can still forge a staggered set (wider rear) on request if you want a more aggressive stance.
Wheel Installation Reference: Torque, Thread & TPMS
Thread & Fastener: M14x1.5, ball-seat lug bolt (13mm radius).
Factory Torque Spec: 120 Nm (89 ft-lb). Shared VW/Audi Group ball-seat bolt spec used across most 5x112 Audi models.
TPMS: Vehicles built before the 2008 model year were not federally required to carry factory TPMS in the US, though many manufacturers adopted it earlier; verify whether your specific build has TPMS before ordering sensor-compatible wheels.
Tire Pressure: Always set tire pressure to the value on your vehicle's tire placard (driver's doorjamb or glovebox), not the max PSI printed on the tire sidewall — this is trim- and tire-size-specific and stays the same reference point when you switch to a different wheel and tire combination.
Reference data compiled from published OEM service specifications and cross-checked against independent repair sources; always confirm against your owner's manual or door-jamb placard before installation.
Sources and Last Update
Data checked against: avtoreference.com.
This record is part of the open ANKUSI Wheel Fitment Dataset (DOI 10.5281/zenodo.23241521, CC BY 4.0).
Other cars on the same factory size: 15x6 wheels · 15 inch wheels.
Compiled by the ANKUSI Wheels engineering team, an IATF 16949 and ISO 9001 certified forged wheel factory in Guangzhou.