2007 GMC Sierra 1500 Wheel Offset

Quick specs

Wheel size: 7.5x17 · 8x18 · 8.5x20
Offset: ET31
Backspacing: 4.97 in · 5.22 in · 5.47 in
Bolt pattern: 6x139.7
Center bore: 78.1 mm
Thread: M14 x 1.5
Tire size: 245/70R17 · 265/70R17 · 265/65R18 · 275/55R20

OEM configurations

Configuration	Front	Rear	Offset	Backspacing	Tire	Bolt pattern	Center bore	Thread
4.3i · 4.3L, LU3, V6, Petrol	7.5x17	—	ET31	4.97 in	245/70R17	6x139.7	78.1 mm	M14 x 1.5
4.3i · 4.3L, LU3, V6, Petrol	7.5x17	—	ET31	4.97 in	265/70R17	6x139.7	78.1 mm	M14 x 1.5
4.3i · 4.3L, LU3, V6, Petrol	8x18	—	ET31	5.22 in	265/65R18	6x139.7	78.1 mm	M14 x 1.5
4.3i · 4.3L, LU3, V6, Petrol	8.5x20	10.5x20	ET31 / ET35	5.47 in	275/55R20	6x139.7	78.1 mm	M14 x 1.5
4.8i · 4.8L, LY2, V8, Petrol	7.5x17	—	ET31	4.97 in	245/70R17	6x139.7	78.1 mm	M14 x 1.5
4.8i · 4.8L, LY2, V8, Petrol	7.5x17	—	ET31	4.97 in	265/70R17	6x139.7	78.1 mm	M14 x 1.5
4.8i · 4.8L, LY2, V8, Petrol	8x18	—	ET31	5.22 in	265/65R18	6x139.7	78.1 mm	M14 x 1.5
4.8i · 4.8L, LY2, V8, Petrol	8.5x20	10.5x20	ET31 / ET35	5.47 in	275/55R20	6x139.7	78.1 mm	M14 x 1.5
5.3i · 5.3L, LY5/LH6, V8, Petrol	7.5x17	—	ET31	4.97 in	245/70R17	6x139.7	78.1 mm	M14 x 1.5
5.3i · 5.3L, LY5/LH6, V8, Petrol	7.5x17	—	ET31	4.97 in	265/70R17	6x139.7	78.1 mm	M14 x 1.5
5.3i · 5.3L, LY5/LH6, V8, Petrol	8x18	—	ET31	5.22 in	265/65R18	6x139.7	78.1 mm	M14 x 1.5
5.3i · 5.3L, LY5/LH6, V8, Petrol	8.5x20	10.5x20	ET31 / ET35	5.47 in	275/55R20	6x139.7	78.1 mm	M14 x 1.5
6.0i · 6.0L, LY6, V8, Petrol	7.5x17	—	ET31	4.97 in	245/70R17	6x139.7	78.1 mm	M14 x 1.5
6.0i · 6.0L, LY6, V8, Petrol	7.5x17	—	ET31	4.97 in	265/70R17	6x139.7	78.1 mm	M14 x 1.5
6.0i · 6.0L, LY6, V8, Petrol	8x18	—	ET31	5.22 in	265/65R18	6x139.7	78.1 mm	M14 x 1.5
6.0i · 6.0L, LY6, V8, Petrol	8.5x20	10.5x20	ET31 / ET35	5.47 in	275/55R20	6x139.7	78.1 mm	M14 x 1.5
6.2i · 6.2L, L9H, V8, Flex-Fuel	7.5x17	—	ET31	4.97 in	245/70R17	6x139.7	78.1 mm	M14 x 1.5
6.2i · 6.2L, L9H, V8, Flex-Fuel	7.5x17	—	ET31	4.97 in	265/70R17	6x139.7	78.1 mm	M14 x 1.5
6.2i · 6.2L, L9H, V8, Flex-Fuel	8x18	—	ET31	5.22 in	265/65R18	6x139.7	78.1 mm	M14 x 1.5
6.2i · 6.2L, L9H, V8, Flex-Fuel	8.5x20	10.5x20	ET31 / ET35	5.47 in	275/55R20	6x139.7	78.1 mm	M14 x 1.5

Lug hardware

Real-World 2007 GMC Sierra 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:

24-inch — 3 documented builds
20-inch — 2 documented builds

5 documented builds.

DiameterLayout

20×12 ET-44

Documented on a 2007 GMC Sierra 1500 build — observed custom fitment, not a universal fit guarantee.

Tires: 35/13.5R20

Suspension: Suspension Lift 8"

Compared with OEM

Compared with the 20×8.5 ET31 OEM configuration. Calculated geometry only — not fit confirmation.

Outer edge 119.4 mm farther toward fender (more outward poke)
Inner edge 30.6 mm farther from suspension (more inner clearance)
Width +3.5" vs OEM

View full build on Modified1

Staggered · 24×? / Rear unknown

Documented on a 2007 GMC Sierra 1500 build — observed custom fitment, not a universal fit guarantee.

Wheel: Boss 333

Front: 24×? · 275/30R24
Rear: —

Compared with OEM

Compared with the 20×8.5 ET31 OEM configuration. Calculated geometry only — not fit confirmation.

Diameter +4" vs OEM

View full build on Modified1

Staggered · 24×9 / 24×12

Documented on a 2007 GMC Sierra 1500 build — observed custom fitment, not a universal fit guarantee.

Front: 24×9 · 295/30R24
Rear: 24×12

Compared with OEM

Compared with the 20×8.5 ET31 OEM configuration. Calculated geometry only — not fit confirmation.

Diameter +4" vs OEM

View full build on Modified1

Staggered · 20×? / Rear unknown

Documented on a 2007 GMC Sierra 1500 build — observed custom fitment, not a universal fit guarantee.

Wheel: OEM GMC

Front: 20×? · 275/45R20
Rear: —

Compared with OEM

Compared with the 20×8.5 ET31 OEM configuration. Calculated geometry only — not fit confirmation.

View full build on Modified1

Staggered · 24×? / Rear unknown

Documented on a 2007 GMC Sierra 1500 build — observed custom fitment, not a universal fit guarantee.

Wheel: Boss 333

Front: 24×? · 275/30R24
Rear: —

Compared with OEM

Compared with the 20×8.5 ET31 OEM configuration. Calculated geometry only — not fit confirmation.

Diameter +4" vs OEM

View full build on Modified1

More specs for the 2007 GMC Sierra 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.