ET40 · ET35
| Configuration | Rim | Offset | Backspacing | Tire | Bolt pattern | Center bore | Thread |
|---|---|---|---|---|---|---|---|
| 6.0i · V8, Petrol | 8.5x20 | ET40 | 5.82 in | 275/55R20 | 8x180 | 124.1 mm | M14 x 1.5 |
| 6.0i · V8, Petrol | 9x20 | ET40 | 6.07 in | 285/50R20 | 8x180 | 124.1 mm | M14 x 1.5 |
| 6.0i · V8, Petrol | 9x22 | ET35 | 5.88 in | 285/45R22 | 8x180 | 124.1 mm | M14 x 1.5 |
| 6.6TD · V8, Diesel | 8.5x20 | ET40 | 5.82 in | 275/55R20 | 8x180 | 124.1 mm | M14 x 1.5 |
| 6.6TD · V8, Diesel | 9x20 | ET40 | 6.07 in | 285/50R20 | 8x180 | 124.1 mm | M14 x 1.5 |
| 6.6TD · V8, Diesel | 9x22 | ET35 | 5.88 in | 285/45R22 | 8x180 | 124.1 mm | M14 x 1.5 |
See how a different wheel would sit See wheel backspacing
See how a different width or offset sits versus an OEM configuration for this year.
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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Dorman 611-236 Wheel Nut M14-1.50 Flattop Nut - 22mm Hex, 44.5mm Length Compatible with Select Models, 10 Pack (OE Fix)
Confirmed vehicle catalog match. Confirm seat type for your wheel.
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White Knight 1309-1S-20AM Chrome M14x1.50 Open-End Bulge Acorn Lug Nut, 20 Pack
Confirmed vehicle catalog match. Confirm seat type for your wheel.
Check price on AmazonObserved aftermarket setups from documented Modified1 builds. These are individual build records — not OEM specifications and not clearance guarantees for every vehicle.
Among builds in our database for this model year:
6 documented builds.
Documented on a 2015 GMC Sierra 2500HD build — observed custom fitment, not a universal fit guarantee.
Wheel: Fuel D260
Compared with the 22×9 ET35 OEM configuration. Calculated geometry only — not fit confirmation.
Documented on a 2015 GMC Sierra 2500HD build — observed custom fitment, not a universal fit guarantee.
Wheel: Fuel Dune
Compared with the 20×8.5 ET40 OEM configuration. Calculated geometry only — not fit confirmation.
Documented on a 2015 GMC Sierra 2500HD build — observed custom fitment, not a universal fit guarantee.
Compared with the 22×9 ET35 OEM configuration. Calculated geometry only — not fit confirmation.
Documented on a 2015 GMC Sierra 2500HD build — observed custom fitment, not a universal fit guarantee.
Wheel: Black Rhino Sierra
Compared with the 20×8.5 ET40 OEM configuration. Calculated geometry only — not fit confirmation.
Documented on a 2015 GMC Sierra 2500HD build — observed custom fitment, not a universal fit guarantee.
Wheel: ADV.1 08TruckSpecSL
Compared with the 22×9 ET35 OEM configuration. Calculated geometry only — not fit confirmation.
Documented on a 2015 GMC Sierra 2500HD build — observed custom fitment, not a universal fit guarantee.
Wheel: Remington High-Country
Compared with the 20×8.5 ET40 OEM configuration. Calculated geometry only — not fit confirmation.
OEM offsets are catalog configurations, not an aftermarket “safe ET range.” Matching offset alone does not confirm clearance. Documented custom builds are observed setups only.