ElpiAutoWheel fitment · GMC
GMC Sierra 1500 — Bolt Pattern
Shares its platform with the Silverado 1500: 6×139.7, 78.1 mm hub, M14×1.5 stud, unchanged since 1999. Offset has drifted down over the four generations since — from ET15-41 in the GMT800 to ET14-34 in the current GMTT1 — reflecting wider factory wheel/tire packages over time.
✓ Reviewed 2026-09-22
Trims and markets vary — verify against your own wheel or the owner's handbook before buying.
Will a wheel fit?
This GMC Sierra 1500 is 6×139.7, 78.1 mm hub.
Don't know the wheel's own pattern? Measure it →
Common questions
What bolt pattern does the GMC Sierra 1500 have?
Shares its platform with the Silverado 1500: 6×139.7, 78.1 mm hub, M14×1.5 stud, unchanged since 1999. Offset has drifted down over the four generations since — from ET15-41 in the GMT800 to ET14-34 in the current GMTT1 — reflecting wider factory wheel/tire packages over time. Check the table above for your exact generation, and confirm against a wheel or the owner's handbook before buying.
Will other wheels fit my Sierra 1500?
Only wheels with exactly the same bolt pattern — bolt pattern has no working tolerance. The centre bore must also be equal to or larger than the hub (a larger bore just needs spigot rings). A different pattern needs bolt-on adapters, which also push the wheel outward and change the track.
What is the centre bore on a Sierra 1500?
78.1 mm on the current car. The bore is the hole in the middle of the wheel; it has to clear the hub spigot or sit on a spigot ring.
Bolt pattern is only part of fitment. The offset (ET) decides where the wheel sits in the arch — work that out with the wheel offset calculator. For tyre sizing on a new wheel width, use the tire size calculator.