Ford F-Series Super Duty Tremor (2020) Bolt Pattern & Wheel Fitment
Ford F-Series Super Duty Tremor (2020): 8x170 bolt pattern, 124.9mm center bore. Factory wheels: 18x8.0J F/R. Reference fitment ranges.
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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 |
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 Ford F-Series Super Duty Tremor runs a 8x170 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-Series Super Duty Tremor. 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-Series Super Duty Tremor OE Wheel Specs
The 2020 Ford F-Series Super Duty Tremor (Heavy Pickup) uses a 8x170 bolt pattern with a 124.9mm center bore. Factory wheels are 18x8.0J F/R.
Why the factory spec works for most owners:
- Preserves the factory-tuned ride and steering feel
- A mainstream size for this segment, keeping tire choice wide and prices reasonable
- Leaves full clearance for the stock brakes and suspension hardware
- Keeps handling predictable and consistent in everyday conditions
ANKUSI builds these wheels — we are the forging factory, not a reseller. For the Ford F-Series Super Duty Tremor (2020) 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 — 6,436 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-Series Super Duty Tremor.
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: $450-800 (wheels + tires + install)
B Comfortable Upgrade 20x8.5J ET30
Recommended setup: 20x8.5J 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 22x9.5J ET16
Recommended setup: 22x9.5J 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 | 20x8.5J ET30 | 20x9.0J ET20 | 22x9.5J 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 | $450-800 | $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
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: 20x9.0J ET20 → ~5.79″ backspacing
- Max: 22x10.0J 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-Series Super Duty Tremor? 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-Series Super Duty Tremor (2020)
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:
American Force Gloss Black Multi-Spoke Wheels – Ford F-250/F-350 Super Duty Fitment (20-22in, 8×170)
DOSE Wheels Black Machined Blade-Spoke Forged Wheels – Ford F-250/F-350 Super Duty Fitment (20-22in, 8×170)
Baredown Forged Polished Spike Multi-Spoke Wheels – Ford F-250/F-350 Super Duty Fitment (20-22in, 8×170)
American Force Polished Multi-Spoke Wheels – Ford F-250/F-350 Super Duty Fitment (20-22in, 8×170)Frequently Asked Questions
What bolt pattern (PCD) does the Ford F-Series Super Duty Tremor use?
How many lug bolts does the Ford F-Series Super Duty Tremor use?
What is the center bore size on the Ford F-Series Super Duty Tremor?
What size are the factory (stock) wheels on the Ford F-Series Super Duty Tremor?
What is the biggest wheel size I can fit on my Ford F-Series Super Duty Tremor without rubbing?
What does a flush wheel fitment look like on the Ford F-Series Super Duty Tremor?
Do I need wheel spacers for my Ford F-Series Super Duty Tremor?
How do I calculate wheel backspacing for my Ford F-Series Super Duty Tremor?
What's the difference between wheel offset and backspacing?
Can I run staggered wheels (different sizes front and rear) on my Ford F-Series Super Duty Tremor?
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.