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2006 Chevrolet Impala SS Wheels & Rims: Bolt Pattern, Offset & Sizes
Fitting Chevrolet Impala SS wheels? This page gives the 2006 Chevrolet Impala SS bolt pattern (5x115), centre bore, factory rim size and the offset range for aftermarket and forged Chevrolet Impala SS rims: the same spec sheet ANKUSI uses when machining forged wheels for this car.
Quick answer: The 2006 Chevrolet Impala SS uses a 5x115 bolt pattern with a 70.3 mm centre bore and M12x1.5 lug nuts. Factory wheels: 18x7.0J ET51, front and rear. For aftermarket wheels, 19x8.5J ET40 sits flush and 20x9.0J ET35 is the most aggressive fit.
Forged wheels for the 2006 Chevrolet Impala SS — drilled 5x115 with a 70.3 mm centre bore, built to the offset you choose. From $220 per wheel, made to order in 20–25 days.
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Chevrolet Impala SS (2006): 5x115 bolt pattern, 70.3mm center bore. Factory wheels: 18x7.0J at ET51 offset, front and rear. Reference fitment ranges.
Bolt Pattern5x115
Wheel Bolt/NutM12x1.5 Nut
Center Bore70.3mm
Wheel Load Rating650–750 kg/wheel (Standard Passenger Car segment reference)
Year2006
CategorySedan
✓ 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) | 18x7.0J F/R |
| Flush Fitment | 19x8.5J at ET40 offset |
| Maximum Aggressive | 20x9.0J at ET35 offset |
Forged Wheel Designs for the Chevrolet Impala SS
Every design below is forged to order, so it can be machined to the Chevrolet Impala SS's 5x115 bolt pattern and 70.3 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
A sedan's wheel spec is a balance point the factory tuned between ride comfort, steering feel, and everyday durability. Forging lets us hold that same structural margin while cutting rotational mass, which is where most of the real-world benefit — quicker steering response, marginally better ride — actually comes from.
The Chevrolet Impala SS runs a 5x115 bolt pattern, 70.3mm center bore, and a 18x7.0J, front and rear, wheel from the factory. Our Flush Fitment reference is 19x8.5J ET40, which tucks the tire under the fender lip on a stock-height Chevrolet Impala SS. Our Maximum Aggressive reference is 20x9.0J ET35 — beyond that offset, expect rubbing against the inner fender liner under compression without further trimming.
Chevrolet Impala SS OE Wheel Specs
The 2006 Chevrolet Impala SS (Sedan) uses a 5x115 bolt pattern with a 70.3mm center bore. Factory wheels are 18x7.0J 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 Chevrolet Impala SS (2006) we drill the 5x115 pattern and cut the centre bore to 70.3mm 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.
A Note on Clearance
Final clearance depends on the exact tire model, suspension height, brake package, alignment and vehicle tolerances. A physical test fit is recommended before production.
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 Chevrolet spec, or want a wheel built to a custom offset for your Chevrolet Impala SS? Contact ANKUSI with your bolt pattern and offset target and we will confirm the correct forged wheel spec for your build.
Chevrolet Impala SS: Specs by Model Year
| Year | Bolt pattern | Center bore | Factory wheel |
|---|---|---|---|
| 2004 | 5x115 | 70.3 mm | 17x7J ET51 |
| 2006 | 5x115 | 70.3 mm | 18x7J ET51 |
Bolt pattern and center bore stay the same across all 2 model years in our database (2004–2006).
Offset and Backspacing: Factory Wheel vs Options
Backspacing ≈ width/2 + ET/25.4 + 0.5 in. "Inward" means closer to the suspension; "outward" means closer to the fender lip.
| Setup | Size | ET | Backspacing | Inward vs OE | Outward vs OE |
|---|---|---|---|---|---|
| Factory (OE) | 18x7J | ET51 | 6.01 in (153 mm) | — | — |
| Flush | 19x8.5J | ET40 | 6.32 in (161 mm) | +8 mm | +30 mm |
| Maximum | 20x9J | ET35 | 6.38 in (162 mm) | +9 mm | +41 mm |
Vehicles With the Same Hub as the Chevrolet Impala SS (5x115, 70.3 mm Bore)
In our database, 134 other vehicle entries from 9 makes use exactly the same 5x115 bolt pattern and 70.3 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.
5x115 is used by 3.2% of the vehicle pages in our English fitment guide (209 of 6,503); 65.1% of those also use a 70.3 mm center bore.
Hub-Centric Rings for a 70.3 mm Center Bore
A wheel with a center bore larger than 70.3 mm needs a hub-centric ring. The most common combinations:
| Wheel bore | Ring size |
|---|---|
| 70.5 mm | 70.5 → 70.3 mm |
| 71.6 mm | 71.6 → 70.3 mm |
| 72.6 mm | 72.6 → 70.3 mm |
| 73.1 mm | 73.1 → 70.3 mm |
ANKUSI forged wheels are bored to exactly 70.3 mm for this vehicle, so no ring is needed.
Frequently Asked Questions
What bolt pattern (PCD) does the Chevrolet Impala SS use?
The 2006 Chevrolet Impala SS uses a 5x115 bolt pattern.
How many lug bolts does the Chevrolet Impala SS use?
The Chevrolet Impala SS uses a 5-lug bolt pattern (5x115), so you need a 5-lug forged wheel to bolt straight on.
What is the center bore size on the Chevrolet Impala SS?
The Chevrolet Impala SS's center bore is 70.3mm. 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 Chevrolet Impala SS?
Factory wheels on the Chevrolet Impala SS are 18x7.0J F/R.
What is the biggest wheel size I can fit on my Chevrolet Impala SS without rubbing?
The most aggressive fitment we recommend without fender work is 20x9.0J at ET35 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 Chevrolet Impala SS?
For a flush look with minimal to no rubbing, we recommend 19x8.5J at ET40 offset as a starting point on a stock or mildly lowered Chevrolet Impala SS.
Do I need wheel spacers for my Chevrolet Impala SS?
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 Chevrolet Impala SS?
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 6.32" 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 Chevrolet Impala SS?
The Chevrolet Impala SS 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: M12x1.5, conical-seat lug nut.
Factory Torque Spec: 136 Nm (100 ft-lb). Covers most Chevrolet passenger cars and crossovers on M12 studs.
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: 18x7 wheels · 18 inch wheels.
Compiled by the ANKUSI Wheels engineering team, an IATF 16949 and ISO 9001 certified forged wheel factory in Guangzhou.