Dodge Ram Heavy Duty Cummins 600 (2004) Wheel Fitment
Dodge Ram Heavy Duty Cummins 600 (2004): 8x165.1 bolt pattern, 121.3mm center bore. Factory wheels: 17x8.0J at ET25 offset, front and rear. Reference fitment ranges.
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Wheel Size & Offset at a Glance
| Configuration | Wheel Size & Offset |
|---|---|
| Factory (OE) | 17x8.0J F/R |
| Flush Fitment | 17x9.0J at ET12 offset |
| Maximum Aggressive | 18x9.0J at ET0 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
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 Dodge Ram Heavy Duty Cummins 600 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 Dodge Ram Heavy Duty Cummins 600 runs a 8x165.1 bolt pattern, 121.3mm center bore, and a 17x8.0J, front and rear, wheel from the factory. Our Flush Fitment reference is 17x9.0J ET12, which tucks the tire under the fender lip on a stock-height Dodge Ram Heavy Duty Cummins 600. Our Maximum Aggressive reference is 18x9.0J ET0 — beyond that offset, expect rubbing against the inner fender liner under compression without further trimming.
Dodge Ram Heavy Duty Cummins 600 OE Wheel Specs
The 2004 Dodge Ram Heavy Duty Cummins 600 (Pickup) uses a 8x165.1 bolt pattern with a 121.3mm center bore. Factory wheels are 17x8.0J 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
Flush Fitment
For a flush look, F/R 17x9.0J ET12 is a commonly used starting point — clearance must be verified on a stock or mildly lowered Dodge Ram Heavy Duty Cummins 600.
Maximum Aggressive Fitment
F/R 18x9.0J ET0 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 17x8.0J ET25
Recommended setup: 17x8.0J ET25 | 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 17x8.5J ET19
Recommended setup: 17x8.5J 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 17x9.0J ET12
Recommended setup: 17x9.0J ET12 | 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 18x9.0J ET6
Recommended setup: 18x9.0J ET6 | 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 18x9.0J ET0
Recommended setup: 18x9.0J 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 | 17x8.0J ET25 | 17x8.5J ET19 | 17x9.0J ET12 | 18x9.0J ET6 | 18x9.0J 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 | $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: 17x8.0J ET25
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: 17x9.0J ET12
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: 18x9.0J ET0
Cost: ~$5,500
Outcome: Maximum visual impact; daily comfort and fuel economy are heavily compromised, physical test fit required before production.
Decision Guide
Offset & Backspacing Reference
Backspacing is calculated as wheel width (in) ÷ 2 + offset (mm) ÷ 25.4 + 0.5 (flange allowance):
- OE: 17x8.0J ET25 → ~5.48″ backspacing
- Flush: 17x9.0J ET12 → ~5.47″ backspacing
- Max: 18x9.0J ET0 → ~5″ 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 Dodge spec, or want a wheel built to a custom offset for your Dodge Ram Heavy Duty Cummins 600? Contact ANKUSI with your bolt pattern and offset target and we will confirm the correct forged wheel spec for your build.