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Drag Racing · Custom Finish
1999 Chevrolet Astro Wheels & Rims: Bolt Pattern, Offset & Sizes
Fitting Chevrolet Astro wheels? This page gives the 1999 Chevrolet Astro bolt pattern (5x127), centre bore, factory rim size and the offset range for aftermarket and forged Chevrolet Astro rims: the same spec sheet ANKUSI uses when machining forged wheels for this car.
Quick answer: The 1999 Chevrolet Astro uses a 5x127 bolt pattern with a 78.1 mm centre bore and M12x1.5 lug nuts. Factory wheels: 15x6.5J ET0, front and rear. For aftermarket wheels, 17x8.0J ET-10 sits flush and 18x9.0J ET-15 is the most aggressive fit.
Forged wheels for the 1999 Chevrolet Astro — drilled 5x127 with a 78.1 mm centre bore, built to the offset you choose. From $220 per wheel, made to order in 20–25 days.
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Chevrolet Astro (1999): 5x127 bolt pattern, 78.1mm center bore. Factory wheels: 15x6.5J at ET0 offset, front and rear. Reference fitment ranges.
Bolt Pattern5x127
Wheel Bolt/NutM12x1.5 Nut
Center Bore78.1mm
Wheel Load Rating900–1100 kg/wheel (Van / MPV segment reference)
Year1999
CategoryVan
✓ 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) | 15x6.5J F/R |
| Flush Fitment | 17x8.0J at ET-10 offset |
| Maximum Aggressive | 18x9.0J at ET-15 offset |
Forged Wheel Designs for the Chevrolet Astro
Every design below is forged to order, so it can be machined to the Chevrolet Astro's 5x127 bolt pattern and 78.1 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
Minivans carry passengers and cargo across a wide range of loaded conditions, so the factory wheel spec is built around a conservative load margin. Forging lets us hold that same margin while trimming rotational mass, which shows up as smoother ride quality whether the vehicle is empty or fully loaded.
The Chevrolet Astro runs a 5x127 bolt pattern, 78.1mm center bore, and a 15x6.5J, front and rear, wheel from the factory. Our Flush Fitment reference is 17x8.0J ET-10, which tucks the tire under the fender lip on a stock-height Chevrolet Astro. Our Maximum Aggressive reference is 18x9.0J ET-15 — beyond that offset, expect rubbing against the inner fender liner under compression without further trimming.
Chevrolet Astro OE Wheel Specs
The 1999 Chevrolet Astro (Van) uses a 5x127 bolt pattern with a 78.1mm center bore. Factory wheels are 15x6.5J F/R.
Why the factory spec works for most owners:
- Supports passenger and cargo load capacity
- Balances ride comfort with everyday practicality
- A widely used size for this vehicle class, supporting parts and tire availability
- Maintains clearance for the factory suspension and brake package
ANKUSI builds these wheels — we are the forging factory, not a reseller. For the Chevrolet Astro (1999) we drill the 5x127 pattern and cut the centre bore to 78.1mm 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.
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 Astro? Contact ANKUSI with your bolt pattern and offset target and we will confirm the correct forged wheel spec for your build.
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) | 15x6.5J | ET0 | 3.75 in (95 mm) | — | — |
| Flush | 17x8J | ET-10 | 4.11 in (104 mm) | +9 mm | +29 mm |
| Maximum | 18x9J | ET-15 | 4.41 in (112 mm) | +17 mm | +47 mm |
Vehicles With the Same Hub as the Chevrolet Astro (5x127, 78.1 mm Bore)
In our database, 6 other vehicle entries from 2 makes use exactly the same 5x127 bolt pattern and 78.1 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.
5x127 is used by 1.3% of the vehicle pages in our English fitment guide (82 of 6,503); 8.5% of those also use a 78.1 mm center bore.
Hub-Centric Rings for a 78.1 mm Center Bore
A wheel with a center bore larger than 78.1 mm needs a hub-centric ring. The most common combinations:
| Wheel bore | Ring size |
|---|---|
| 84.1 mm | 84.1 → 78.1 mm |
| 93.1 mm | 93.1 → 78.1 mm |
| 100.1 mm | 100.1 → 78.1 mm |
| 106.1 mm | 106.1 → 78.1 mm |
ANKUSI forged wheels are bored to exactly 78.1 mm for this vehicle, so no ring is needed.
Frequently Asked Questions
What bolt pattern (PCD) does the Chevrolet Astro use?
The 1999 Chevrolet Astro uses a 5x127 bolt pattern.
How many lug bolts does the Chevrolet Astro use?
The Chevrolet Astro uses a 5-lug bolt pattern (5x127), so you need a 5-lug forged wheel to bolt straight on.
What is the center bore size on the Chevrolet Astro?
The Chevrolet Astro's center bore is 78.1mm. 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 Chevrolet Astro?
Factory wheels on the Chevrolet Astro are 15x6.5J F/R.
What is the biggest wheel size I can fit on my Chevrolet Astro without rubbing?
The most aggressive fitment we recommend without fender work is 18x9.0J at ET-15 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 Astro?
For a flush look with minimal to no rubbing, we recommend 17x8.0J at ET-10 offset as a starting point on a stock or mildly lowered Chevrolet Astro.
Do I need wheel spacers for my Chevrolet Astro?
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 Astro?
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 4.11" 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 Astro?
The Chevrolet Astro 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: 15x6.5 wheels · 15 inch wheels.
Compiled by the ANKUSI Wheels engineering team, an IATF 16949 and ISO 9001 certified forged wheel factory in Guangzhou.