| Configuration | Rim | Offset | Backspacing | Tire | Bolt pattern | Center bore | Thread |
|---|---|---|---|---|---|---|---|
| 6.0i · V8, Petrol | 8x20 | ET24 | 4.94 in | 265/60R20 | 8x165.1 | 116.7 mm | M14 x 1.5 |
| 6.0i · V8, Petrol | 8.5x20 | ET20 | 5.04 in | 275/55R20 | 8x165.1 | 116.7 mm | M14 x 1.5 |
| 6.0i · V8, Petrol | 9x20 | ET20 | 5.29 in | 285/50R20 | 8x165.1 | 116.7 mm | M14 x 1.5 |
| 6.6TD · V8, Diesel | 8x20 | ET24 | 4.94 in | 265/60R20 | 8x165.1 | 116.7 mm | M14 x 1.5 |
| 6.6TD · V8, Diesel | 8.5x20 | ET20 | 5.04 in | 275/55R20 | 8x165.1 | 116.7 mm | M14 x 1.5 |
| 6.6TD · V8, Diesel | 9x20 | ET20 | 5.29 in | 285/50R20 | 8x165.1 | 116.7 mm | M14 x 1.5 |
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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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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Gorilla Automotive 66641 Duplex Acorn Gorilla Guard Locks (14mm x 1.50 Thread Size) - Pack of 4, Chrome
Confirmed vehicle catalog match. Confirm seat style 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:
5 documented builds.
Documented on a 2008 GMC Sierra 2500HD build — observed custom fitment, not a universal fit guarantee.
Compared with the 20×8 ET24 OEM configuration. Calculated geometry only — not fit confirmation.
Documented on a 2008 GMC Sierra 2500HD build — observed custom fitment, not a universal fit guarantee.
Wheel: Giovanna Barcelona
Compared with the 20×8 ET24 OEM configuration. Calculated geometry only — not fit confirmation.
Documented on a 2008 GMC Sierra 2500HD build — observed custom fitment, not a universal fit guarantee.
Wheel: SSS
Compared with the 20×8 ET24 OEM configuration. Calculated geometry only — not fit confirmation.
Documented on a 2008 GMC Sierra 2500HD build — observed custom fitment, not a universal fit guarantee.
Compared with the 20×8 ET24 OEM configuration. Calculated geometry only — not fit confirmation.
Documented on a 2008 GMC Sierra 2500HD build — observed custom fitment, not a universal fit guarantee.
Compared with the 20×8 ET24 OEM configuration. Calculated geometry only — not fit confirmation.
See how a different width or offset sits versus an OEM configuration for this year.
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.