2018 Chevrolet Silverado 1500 Wheel Offset

Quick specs

Wheel size
8x17 · 8.5x18 · 9x20 · 9x22
Bolt pattern
6×139.7
Center bore
78.1 mm
Thread
M14×1.5
Tire size
Multiple — see configurations

OEM configurations

ConfigurationRimOffsetBackspacingTireBolt patternCenter boreThread
4.3 · V6, Flex-Fuel8x17ET244.94 in255/70R176x139.778.1 mmM14 x 1.5
4.3 · V6, Flex-Fuel8x17ET244.94 in265/70R176x139.778.1 mmM14 x 1.5
4.3 · V6, Flex-Fuel8.5x18ET245.19 in265/65R186x139.778.1 mmM14 x 1.5
4.3 · V6, Flex-Fuel9x20ET275.56 in275/55R206x139.778.1 mmM14 x 1.5
4.3 · V6, Flex-Fuel9x22ET245.44 in285/45R226x139.778.1 mmM14 x 1.5
5.3 · 5.3L, V8, Petrol8x17ET244.94 in255/70R176x139.778.1 mmM14 x 1.5
5.3 · 5.3L, V8, Petrol8x17ET244.94 in265/70R176x139.778.1 mmM14 x 1.5
5.3 · 5.3L, V8, Petrol8.5x18ET245.19 in265/65R186x139.778.1 mmM14 x 1.5
5.3 · 5.3L, V8, Petrol9x20ET275.56 in275/55R206x139.778.1 mmM14 x 1.5
5.3 · 5.3L, V8, Petrol9x22ET245.44 in285/45R226x139.778.1 mmM14 x 1.5
6.2 · 6.2L, V8, Petrol8.5x18ET245.19 in265/65R186x139.778.1 mmM14 x 1.5
6.2 · 6.2L, V8, Petrol9x20ET275.56 in275/55R206x139.778.1 mmM14 x 1.5
6.2 · 6.2L, V8, Petrol9x22ET245.44 in285/45R226x139.778.1 mmM14 x 1.5
4.3 · 4.3L, V6, Flex-Fuel8x17ET244.94 in255/70R176x139.778.1 mmM14 x 1.5
4.3 · 4.3L, V6, Flex-Fuel8x17ET244.94 in265/70R176x139.778.1 mmM14 x 1.5
4.3 · 4.3L, V6, Flex-Fuel8.5x18ET245.19 in265/65R186x139.778.1 mmM14 x 1.5
4.3 · 4.3L, V6, Flex-Fuel9x20ET275.56 in275/55R206x139.778.1 mmM14 x 1.5
4.3 · 4.3L, V6, Flex-Fuel9x22ET245.44 in285/45R226x139.778.1 mmM14 x 1.5

Wheels and hardware

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Lug hardware

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  • M14x1.5 Lug Nuts Black with Spline Tuner, XL 2 inches Length Conical Aftermarket Wheel Nut, Compatible with Chevy GMC Ford Cadillac Lincoln SAAB Saturn Silverado 1500 Savana, Set of 24

    Confirmed vehicle catalog match. Confirm seat type for your wheel.

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  • MIKKUPPA M14x1.5 Wheel Lug Nut - Replacement for Chevy Silverado 1500 2500, GMC, Ford, Ram, Aftermarket Wheel - 32pcs Black Closed End Lug Nuts with 1 Socket Key

    Confirmed vehicle catalog match. Confirm seat type for your wheel.

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  • Wheel Accessories Parts Bulge Acorn Set of 24 Aftermarket Lug Nuts M14 X 1.50 Thread 1.90" Long for Trucks 19mm(3/4") Hex 14x1.5 Wheel Lug Nuts (24 M14x1.50, Chrome)

    Confirmed vehicle catalog match. Confirm seat type for your wheel.

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Wheel locks

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Real-World 2018 Chevrolet Silverado 1500 Wheel Setups

Observed aftermarket setups from documented Modified1 builds. These are individual build records — not OEM specifications and not clearance guarantees for every vehicle.

Common custom wheel sizes

Among builds in our database for this model year:

  • 20-inch — 2 documented builds
  • 17-inch — 1 documented build

3 documented builds.

2018 Chevrolet Silverado 1500 custom wheel setup

17×? ET0

Documented on a 2018 Chevrolet Silverado 1500 build — observed custom fitment, not a universal fit guarantee.

Tires
285/75R17
Suspension
Leveling Kit
Compared with OEM

Compared with the 17×8 ET24 OEM configuration. Calculated geometry only — not fit confirmation.

    2018 Chevrolet Silverado 1500 custom wheel setup

    20×10 ET-25

    Documented on a 2018 Chevrolet Silverado 1500 build — observed custom fitment, not a universal fit guarantee.

    Tires
    33/12.5R20
    Suspension
    Leveling Kit
    Compared with OEM

    Compared with the 20×9 ET27 OEM configuration. Calculated geometry only — not fit confirmation.

    • Outer edge 64.7 mm farther toward fender (more outward poke)
    • Inner edge 39.3 mm farther from suspension (more inner clearance)
    • Width +1" vs OEM
    2018 Chevrolet Silverado 1500 custom wheel setup

    20×9 ET20

    Documented on a 2018 Chevrolet Silverado 1500 build — observed custom fitment, not a universal fit guarantee.

    Tires
    285/55R20
    Compared with OEM

    Compared with the 20×9 ET27 OEM configuration. Calculated geometry only — not fit confirmation.

    • Outer edge 7 mm farther toward fender (more outward poke)
    • Inner edge 7 mm farther from suspension (more inner clearance)

    Compare your own setup

    See how a different width or offset sits versus an OEM configuration for this year.

    Open full fitment calculator

    More specs for the 2018 Chevrolet Silverado 1500

    Each OEM row is a catalog configuration. Offset ranges are not collapsed when the database has exact setups. Documented aftermarket builds are observed setups only — not universal fit or clearance confirmation.