KMC-Style Polished Multi-Spoke Floating Bolt Lip Off-Road Forged Wheels
Ford F-250 Super Duty / Ram 2500 Fitment · 8-Lug
2008 Ford F-350 Super Duty Wheels & Rims: Bolt Pattern, Offset & Sizes
Fitting Ford F-350 Super Duty wheels? This page gives the 2008 Ford F-350 Super Duty bolt pattern (8x170), centre bore, factory rim size and the offset range for aftermarket and forged Ford F-350 Super Duty rims: the same spec sheet ANKUSI uses when machining forged wheels for this car.
Quick answer: The 2008 Ford F-350 Super Duty uses a 8x170 bolt pattern with a 124.9 mm centre bore and M14x2 lug nuts. Factory wheels: 18x8.0J, front and rear. For aftermarket wheels, 20x9.0J ET20 sits flush and 22x10.0J ET12 is the most aggressive fit.
Forged wheels for the 2008 Ford F-350 Super Duty — drilled 8x170 with a 124.9 mm centre bore, built to the offset you choose. From $220 per wheel, made to order in about 25 days.
Get a quote for this car
Ford F-350 Super Duty (2008): 8x170 bolt pattern, 124.9mm center bore. Factory wheels: 18x8.0J F/R. Reference fitment ranges.
Bolt Pattern8x170
Wheel Bolt/NutM14x2 Nut
Center Bore124.9mm
Wheel Load Rating1400–1650 kg/wheel (Heavy-Duty Truck segment reference)
Year2008
CategoryHeavy Pickup
✓ Data check: the bolt pattern and center bore on this page match an independent fitment reference. Last reviewed September 25, 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) | 18x8.0J F/R |
| Flush Fitment | 20x9.0J at ET20 offset |
| Maximum Aggressive | 22x10.0J at ET12 offset |
Forged wheels for the Ford F-350 Super DutyMachined to the 8x170 bolt pattern and 124.9 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
Payload and towing figures on a truck are engineered around a specific unsprung mass budget at each corner. Forging lets ANKUSI hit the factory strength rating for the Ford F-350 Super Duty at a lower rotational weight than an equivalent cast wheel, which is the more meaningful upgrade on a work-capable platform than diameter alone.
The Ford F-350 Super Duty runs a 8*170 bolt pattern, 124.9mm center bore, and a 18x8.0J, front and rear, wheel from the factory. Our Flush Fitment reference is 20x9.0J ET20, which tucks the tire under the fender lip on a stock-height Ford F-350 Super Duty. Our Maximum Aggressive reference is 22x10.0J ET12 — beyond that offset, expect rubbing against the inner fender liner under compression without further trimming.
Ford F-350 Super Duty OE Wheel Specs
The 2008 Ford F-350 Super Duty (Heavy Pickup) uses a 8*170 bolt pattern with a 124.9mm center bore. Factory wheels are 18x8.0J F/R.
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 Ford F-350 Super Duty (2008) we drill the 8x170 pattern and cut the centre bore to 124.9mm 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, F/R 20x9.0J ET20 is the recommended starting point on a stock or mildly lowered Ford F-350 Super Duty.
Maximum Aggressive Fitment
F/R 22x10.0J ET12 is a more aggressive reference setup. Beyond this, expect rubbing under compression without fender rolling or camber correction.
5-Tier Configuration Options
A Factory-Style 18x8.0J ET40
Recommended setup: 18x8.0J ET40 | 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 19x8.5J ET30
Recommended setup: 19x8.5J ET30 | 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 20x9.0J ET20
Recommended setup: 20x9.0J ET20 | 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 21x9.5J ET16
Recommended setup: 21x9.5J ET16 | 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 22x10.0J ET12
Recommended setup: 22x10.0J ET12 | 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 | 18x8.0J ET40 | 19x8.5J ET30 | 20x9.0J ET20 | 21x9.5J ET16 | 22x10.0J ET12 |
| 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: 18x8.0J ET40
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: 20x9.0J ET20
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: 22x10.0J ET12
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 Ford F-350 Super Duty owners.
Offset & Backspacing Reference
Backspacing is calculated as wheel width (in) ÷ 2 + offset (mm) ÷ 25.4 + 0.5 (flange allowance):
- OE: 18x8.0J ET40 → ~6.07″ backspacing
- Flush: 20x9J ET20 → ~5.79″ backspacing
- Max: 22x10J ET12 → ~5.97″ backspacing
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 Ford spec, or want a wheel built to a custom offset for your Ford F-350 Super Duty? 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 Ford F-350 Super Duty (2008)
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 8x170 pattern and the 124.9mm 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 Ford orders on this platform land somewhere between the 20x9.0J ET20 flush setup and the 22x10.0J ET12 aggressive setup referenced above.
Designs we already tool for the 8x170 pattern — each one is re-cut to your sizes and offsets:
Ford F-250 Super Duty / Silverado HD Off-Road Forged Wheels – Mirror Polished Mesh Gold-Ring Beadlock (8-Lug)
Ford F-250 Super Duty / Ram 2500 Beadlock Off-Road Forged Wheels – Black Ring Polished Mesh Hex Cap (8-Lug)
KG Forged-Style KG1 Forged Polished Multi-Spoke Forged Wheels – Ford F-250 / Ford F-350 Super Duty Fitment (8-Lug)
KMC-Style Polished Multi-Spoke Floating Bolt Lip Off-Road Forged Wheels – Ford F-250 Super Duty / Ram 2500 Fitment (8-Lug)Frequently Asked Questions
What bolt pattern (PCD) does the Ford F-350 Super Duty use?
The 2008 Ford F-350 Super Duty uses a 8x170 bolt pattern.
How many lug bolts does the Ford F-350 Super Duty use?
The Ford F-350 Super Duty uses a 8-lug bolt pattern (8x170), so you need a 8-lug forged wheel to bolt straight on.
What is the center bore size on the Ford F-350 Super Duty?
The Ford F-350 Super Duty's center bore is 124.9mm. 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 Ford F-350 Super Duty?
Factory wheels on the Ford F-350 Super Duty are 18x8.0J F/R.
What is the biggest wheel size I can fit on my Ford F-350 Super Duty without rubbing?
The most aggressive fitment we recommend without fender work is 22x10.0J at ET12 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 Ford F-350 Super Duty?
For a flush look with minimal to no rubbing, we recommend 20x9.0J at ET20 offset as a starting point on a stock or mildly lowered Ford F-350 Super Duty.
Do I need wheel spacers for my Ford F-350 Super Duty?
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 Ford F-350 Super Duty?
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 5.79" 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 Ford F-350 Super Duty?
The Ford F-350 Super Duty 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 Ford F-350 Super Duty (8x170, 124.9 mm Bore)
In our database, 6 other Ford entries use exactly the same 8x170 bolt pattern and 124.9 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.
8x170 is used by 0.1% of the vehicle pages in our English fitment guide (7 of 6,503); 100.0% of those also use a 124.9 mm center bore.
Hub-Centric Rings for a 124.9 mm Center Bore
A wheel with a center bore larger than 124.9 mm needs a hub-centric ring. The most common combinations:
| Wheel bore | Ring size |
|---|---|
| 130.1 mm | 130.1 → 124.9 mm |
ANKUSI forged wheels are bored to exactly 124.9 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: 18x8 wheels · 18 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 Ford F-350 Super Duty
Every design below is forged to order, so it can be machined to the Ford F-350 Super Duty's 8x170 bolt pattern and 124.9 mm center bore, with the width and offset calculated for your setup.
Ford OEM-Style Matte Black Exposed Bolt Detail Floating Cap Forged Wheels
Ford F-250 Super Duty / F-350 Super Duty Fitment · 8-Lug
Ford F-250 Super Duty / Chevrolet Silverado 2500HD Off-Road Forged Wheels
Matte Black H-Type 12-Spoke · 8-Lug
Ford F-250 Super Duty / Chevrolet Silverado 2500HD Off-Road Forged Wheels
Mirror Polished H-Type 12-Spoke · 8-Lug
JTX Forged-Style Polished 16-Spoke Bolted Ring Beadlock Off-Road Forged Wheels
Ford F-250 Super Duty / Ram 2500 Fitment · 8-Lug
Limited-Style Mirror Polished Mesh 3-Piece Beadlock Off-Road Forged Wheels
Ford F-250 Super Duty / Silverado HD Fitment · 8-Lug
KMC-Style Mirror Polished Mesh Beadlock Off-Road Forged Wheels
Ford F-250 Super Duty / Chevrolet Silverado 2500HD Fitment · 8-Lug
Ford F-250 Super Duty / Silverado HD Off-Road Forged Wheels
Mirror Polished Mesh Gold-Ring Beadlock · 8-Lug
Wheel Installation Reference: Torque, Thread & TPMS
Thread & Fastener: M14x1.5, conical-seat lug nut.
Factory Torque Spec: 200 Nm (150 ft-lb). Super Duty single-rear-wheel spec on M14x1.5 studs; dual-rear-wheel (DRW) F-350/F-450 trucks specify up to 220 ft-lb, confirm before installation.
TPMS: TPMS (Tire Pressure Monitoring System) has been federally mandated on all new light vehicles sold in the US since the 2008 model year. If your wheels use OE-style sensors, have them transferred or cloned to the new wheels at installation.
Tire Pressure: Always set tire pressure to the value on your vehicle's tire placard (driver's doorjamb or glovebox), not the max PSI printed on the tire sidewall — this is trim- and tire-size-specific and stays the same reference point when you switch to a different wheel and tire combination.
Reference data compiled from published OEM service specifications and cross-checked against independent repair sources; always confirm against your owner's manual or door-jamb placard before installation.
Bolt pattern and center bore on this page were cross-checked against at least two independent sources before publication. Last reviewed 2026-09-25. Spotted an error? Email info@ankusi.com and we will verify and correct it.