GMC Sierra 3500HD 8-Lug Forged Wheels
Polished Mesh Cutout · 20-22in, 8×165.1
2007 GMC Sierra 2500 HD SLT Ext Cab Wheels & Rims: Bolt Pattern, Offset & Sizes
Fitting GMC Sierra 2500 HD SLT Ext Cab wheels? This page gives the 2007 GMC Sierra 2500 HD SLT Ext Cab bolt pattern (8x165.1), centre bore, factory rim size and the offset range for aftermarket and forged GMC Sierra 2500 HD SLT Ext Cab rims: the same spec sheet ANKUSI uses when machining forged wheels for this car.
Quick answer: The 2007 GMC Sierra 2500 HD SLT Ext Cab uses a 8x165.1 bolt pattern with a 116.7 mm centre bore and M14x1.5 lug nuts. Factory wheels: 16x6.5J at ET28. For aftermarket wheels, 18x9J ET10 sits flush and 20x9J ET0 is the most aggressive fit.
Forged wheels for the 2007 GMC Sierra 2500 HD SLT Ext Cab — drilled 8x165.1 with a 116.7 mm centre bore, built to the offset you choose. From $220 per wheel, made to order in about 25 days.
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GMC Sierra 2500 HD SLT Ext Cab (2007): 8x165.1 bolt pattern, 116.7mm center bore. Factory wheels: 16x6.5J. Reference fitment ranges.
Bolt Pattern8x165.1
Wheel Bolt/NutM14x1.5 Nut
Center Bore116.7mm
Wheel Load Rating1400–1650 kg/wheel (Heavy-Duty Truck segment reference)
Year2007
CategoryHeavy Pickup
✓ Data check: the bolt pattern and center bore on this page match an independent fitment reference. Last reviewed September 18, 2026. How we verify
Built to order by ANKUSI — IATF 16949 & ISO 9001 certified forged wheel manufacturer, TÜV/SFI/VIA compliant. See our factory & certifications →
Wheel Size & Offset at a Glance
| Configuration | Wheel Size & Offset |
|---|---|
| Factory (OE) | 16x6.5J at ET28 |
| Flush Fitment | 18x9J at ET10 offset |
| Maximum Aggressive | 20x9J at ET0 offset |
Forged wheels for the GMC Sierra 2500 HD SLT Ext CabMachined to the 8x165.1 bolt pattern and 116.7 mm bore · 14–24 inch · offset calculated for your car · 3D drawing before production
How to Read Wheel Offset & Measurements
Use these two references before ordering: the left diagram shows where each spec (PCD, center bore, offset, width and diameter) is measured on the wheel; the right diagram shows how positive, zero and negative offset shift the wheel face relative to the hub centerline.
ANKUSI Engineering Expert Advice
Trucks live and die on unsprung weight and load capacity — every pound added at the wheel is a pound the suspension has to control over every bump, fully loaded or not. Forging the wheel instead of casting it lets us hold the factory load rating while cutting rotational mass, which pays off directly in ride quality and steering response on a vehicle that spends real time towing or hauling.
The GMC Sierra 2500 HD SLT Ext Cab runs a 8x165.1 bolt pattern, 116.7mm center bore, and a 16x6.5J at ET28, front and rear, wheel from the factory. Our Flush Fitment reference is 18x9J ET10, which tucks the tire under the fender lip on a stock-height GMC Sierra 2500 HD SLT Ext Cab. Our Maximum Aggressive reference is 20x9J ET0 — beyond that offset, expect rubbing against the inner fender liner under compression without further trimming.
GMC Sierra 2500 HD SLT Ext Cab OE Wheel Specs
The 2007 GMC Sierra 2500 HD SLT Ext Cab (Heavy Pickup) uses a 8x165.1 bolt pattern with a 116.7mm center bore. Factory wheels are 16x6.5J at ET28.
Why the factory spec works for most owners:
- Supports higher payload and towing capacity
- Preserves ground clearance for towing, hauling and light off-road use
- Matches tire sizing commonly available for this class of vehicle
- Maintains clearance for the factory suspension and brake package
ANKUSI builds these wheels — we are the forging factory, not a reseller. For the GMC Sierra 2500 HD SLT Ext Cab (2007) we drill the 8x165.1 pattern and cut the centre bore to 116.7mm on our own CNC line, so the wheel hub-centres on the car with no spacer rings, in whatever diameter, width and offset you specify.
Converting these ET figures to backspacing? Use the wheel offset and backspacing calculator.
The figures on this page are part of our open wheel fitment dataset — 10,093 vehicles, free to download, CC BY 4.0.
Flush Fitment
For a flush look with minimal rubbing, 18x9J ET10 is the recommended starting point on a stock or mildly lowered GMC Sierra 2500 HD SLT Ext Cab.
Maximum Aggressive Fitment
20x9J ET0 is a more aggressive reference setup. Beyond this, expect rubbing under compression without fender rolling or camber correction.
Real-World Fitment Notes
Wheels: 8x165.1 PCD. Torsion bar leveling kit. Tires: 245/75 R16.
5-Tier Configuration Options
A Factory-Style 16x6.5J ET28
Recommended setup: 16x6.5J ET28 | Economy impact: Negligible | Best for: Daily commuting, family use
Appearance: 7/10 | Comfort: 9.5/10 | Install difficulty: ★☆☆☆☆
Estimated cost: $1,200-1,500 (wheels + tires + install)
B Comfortable Upgrade 17x8.0J ET19
Recommended setup: 17x8.0J ET19 | Economy impact: -2 to -4% | Best for: Daily / street
Appearance: 8/10 | Comfort: 9/10 | Install difficulty: ★☆☆☆☆
Estimated cost: $1,950-2,550 (wheels + tires + install)
C Balanced / Flush Fit 18x9.0J ET10
Recommended setup: 18x9.0J ET10 | Economy impact: -4 to -6% | Best for: Street
Appearance: 8.5/10 | Comfort: 8/10 | Install difficulty: ★★☆☆☆
Estimated cost: $2,600-3,400 (wheels + tires + install)
D Aggressive 19x9.0J ET5
Recommended setup: 19x9.0J ET5 | Economy impact: -6 to -9% | Best for: Show / occasional track
Appearance: 9/10 | Comfort: 6.5/10 | Install difficulty: ★★★☆☆
Estimated cost: $3,900-5,000 (wheels + tires + install)
E Max Aggressive 20x9.0J ET0
Recommended setup: 20x9.0J ET0 | Economy impact: -8 to -12% | Best for: Show only
Appearance: 9.5/10 | Comfort: 4/10 | Install difficulty: ★★★★☆
Estimated cost: $4,800-6,200+ (wheels + tires + install)
Performance Comparison Matrix
| Metric | Tier A | Tier B | Tier C | Tier D | Tier E |
|---|---|---|---|---|---|
| Wheel Spec | 16x6.5J ET28 | 17x8.0J ET19 | 18x9.0J ET10 | 19x9.0J ET5 | 20x9.0J ET0 |
| Economy Impact | Negligible | -2 to -4% | -4 to -6% | -6 to -9% | -8 to -12% |
| Appearance | 7/10 | 8/10 | 8.5/10 | 9/10 | 9.5/10 |
| Comfort | 9.5/10 | 9/10 | 8/10 | 6.5/10 | 4/10 |
| Install Difficulty | ★☆☆☆☆ | ★☆☆☆☆ | ★★☆☆☆ | ★★★☆☆ | ★★★★☆ |
| Cost Range | $1,200-1,500 | $1,950-2,550 | $2,600-3,400 | $3,900-5,000 | $4,800-6,200+ |
| Best For | Daily commuting, family use | Daily / street | Street | Show / occasional track | Show only |
Real-World Reference Cases
The examples below are compiled from typical ANKUSI customer configurations and are labeled as reference cases, not individually verified real-world builds.
Case 1: Daily Driver (Factory-Style)
Profile: Everyday driving, prioritizes comfort and low running cost.
Setup: 16x6.5J ET28
Cost: ~$620
Outcome: Minimal visual change, ride and fuel economy essentially unaffected.
Case 2: Balanced Enthusiast (Balanced / Flush Fit)
Profile: Wants a sportier stance without sacrificing daily usability.
Setup: 18x9.0J ET10
Cost: ~$3,000
Outcome: Noticeable visual upgrade, fuel economy drop within the expected range.
Case 3: Show Build (Max Aggressive)
Profile: Built primarily for shows or occasional track/show use.
Setup: 20x9.0J ET0
Cost: ~$5,500
Outcome: Maximum visual impact; daily comfort and fuel economy are heavily compromised, physical test fit required before production.
Decision Guide
1
What's your primary use? Daily commuting → Tier A/B. Weekend street driving → Tier B/C. Show or occasional track use → Tier D/E.
2
What's your budget? Under $800 → Tier A. $800-3,400 → Tier B/C. $3,400+ → Tier D/E.
3
How much does fuel economy matter? Very important → Tier A. Somewhat important → Tier B/C. Not a priority → Tier D/E.
4
Still unsure? Tier C (Balanced / Flush Fit) is the default choice for most GMC Sierra 2500 HD SLT Ext Cab owners.
Offset & Backspacing Reference
Backspacing is calculated as wheel width (in) ÷ 2 + offset (mm) ÷ 25.4 + 0.5 (flange allowance):
- OE: 16x6.5J ET28 → ~4.85″ backspacing
- Flush: 18x9J ET10 → ~5.39″ backspacing
- Max: 20x9J ET0 → ~5.0″ backspacing
A Note on Clearance
Final clearance depends on the exact tire model, suspension height, brake package, alignment and vehicle tolerances. A physical test fit is recommended before production.
Want to check a different width or offset before you order? Use our Offset & Backspacing Calculator to solve the numbers yourself, or looking for your exact GMC spec, or want a wheel built to a custom offset for your GMC Sierra 2500 HD SLT Ext Cab? Contact ANKUSI with your bolt pattern and offset target and we will confirm the correct forged wheel spec for your build.
Custom Forged Wheels for the GMC Sierra 2500 HD SLT Ext Cab (2007)
Everything above is reference data. If you want wheels actually built to it, that is what ANKUSI does: we are a forged wheel factory in Guangzhou, China, IATF 16949 and ISO 9001 certified, forging on our own 10,000-ton press and producing over 120,000 wheels a year. Forging blank, CNC machining, finishing, coating and inspection all happen in the same building — nothing is subcontracted and nothing is relabelled from another manufacturer.
Every set is cut to order, so the 8x165.1 pattern and the 116.7mm centre bore are machined for this car specifically rather than shimmed with adaptor rings. Diameter, width, offset, concavity, monoblock or multi-piece construction and the finish are all yours to choose — most GMC orders on this platform land somewhere between the 18x9J ET10 flush setup and the 20x9J ET0 aggressive setup referenced above.
We do not hold 8x165.1 wheels on a shelf — they are forged to order, which is why any offset, width and bore combination on this page is buildable rather than limited to a stock list.
Frequently Asked Questions
What bolt pattern (PCD) does the GMC Sierra 2500 HD SLT Ext Cab use?
The 2007 GMC Sierra 2500 HD SLT Ext Cab uses a 8x165.1 bolt pattern.
How many lug bolts does the GMC Sierra 2500 HD SLT Ext Cab use?
The GMC Sierra 2500 HD SLT Ext Cab uses a 8-lug bolt pattern (8x165.1), so you need a 8-lug forged wheel to bolt straight on.
What is the center bore size on the GMC Sierra 2500 HD SLT Ext Cab?
The GMC Sierra 2500 HD SLT Ext Cab's center bore is 116.7mm. If an aftermarket wheel has a larger center bore than this, hub-centric rings are recommended so the wheel centers on the hub itself rather than relying on the lug bolts alone.
What size are the factory (stock) wheels on the GMC Sierra 2500 HD SLT Ext Cab?
Factory wheels on the GMC Sierra 2500 HD SLT Ext Cab are 16x6.5J at ET28.
What is the biggest wheel size I can fit on my GMC Sierra 2500 HD SLT Ext Cab without rubbing?
The most aggressive fitment we recommend without fender work is 20x9J at ET0 offset. Going beyond this typically causes rubbing under compression unless you roll the fenders or add camber correction.
What does a flush wheel fitment look like on the GMC Sierra 2500 HD SLT Ext Cab?
For a flush look with minimal to no rubbing, we recommend 18x9J at ET10 offset as a starting point on a stock or mildly lowered GMC Sierra 2500 HD SLT Ext Cab.
Do I need wheel spacers for my GMC Sierra 2500 HD SLT Ext Cab?
No. ANKUSI forges each wheel to your exact target offset, including the flush or max specs above, so you get the correct fitment without stacking spacers. Spacers are typically only used to push out an existing OE-offset wheel without replacing it, which isn't necessary when you're ordering a custom-offset forged wheel.
How do I calculate wheel backspacing for my GMC Sierra 2500 HD SLT Ext Cab?
Backspacing (in inches) = wheel width (in) ÷ 2 + offset (mm) ÷ 25.4 + 0.5 (flange allowance). For example, the flush spec above works out to roughly 5.39" of backspacing.
What's the difference between wheel offset and backspacing?
Offset is the distance in millimeters from the wheel's true centerline to its mounting face (positive offset pulls the wheel in, negative pushes it out). Backspacing is the distance in inches from the mounting face to the back edge of the wheel barrel. They describe the same fitment from two different reference points, which is why ANKUSI lists both above — some shops and tuning guides quote offset, others quote backspacing.
Can I run staggered wheels (different sizes front and rear) on my GMC Sierra 2500 HD SLT Ext Cab?
The GMC Sierra 2500 HD SLT Ext Cab runs the same wheel size front and rear from the factory, so staggered fitment is not required. ANKUSI can still forge a staggered set (wider rear) on request if you want a more aggressive stance.
Vehicles With the Same Hub as the GMC Sierra 2500 HD SLT Ext Cab (8x165.1, 116.7 mm Bore)
In our database, 18 other vehicle entries from 4 makes use exactly the same 8x165.1 bolt pattern and 116.7 mm center bore. Factory wheels from these cars bolt on and center on the hub without rings; offset and width still have to be checked.
8x165.1 is used by 0.4% of the vehicle pages in our English fitment guide (29 of 6,503); 65.5% of those also use a 116.7 mm center bore.
Hub-Centric Rings for a 116.7 mm Center Bore
A wheel with a center bore larger than 116.7 mm needs a hub-centric ring. The most common combinations:
| Wheel bore | Ring size |
|---|---|
| 130.1 mm | 130.1 → 116.7 mm |
ANKUSI forged wheels are bored to exactly 116.7 mm for this vehicle, so no ring is needed.
Sources and Last Update
Data checked against: avtoreference.com.
This record is part of the open ANKUSI Wheel Fitment Dataset (DOI 10.5281/zenodo.23241521, CC BY 4.0).
Other cars on the same factory size: 16x6.5 wheels · 16 inch wheels.
Compiled by the ANKUSI Wheels engineering team, an IATF 16949 and ISO 9001 certified forged wheel factory in Guangzhou.
Forged Wheel Designs for the GMC Sierra 2500 HD SLT Ext Cab
Every design below is forged to order, so it can be machined to the GMC Sierra 2500 HD SLT Ext Cab's 8x165.1 bolt pattern and 116.7 mm center bore, with the width and offset calculated for your setup.
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Bolt pattern and center bore on this page were cross-checked against at least two independent sources before publication. Last reviewed 2026-09-18. Spotted an error? Email info@ankusi.com and we will verify and correct it.