Cadillac XT4 (2019) Bolt Pattern & Wheel Fitment
Cadillac XT4 (2019): 5x120 bolt pattern, 66.9mm center bore. Factory wheels: 18x8.0J F/R. Reference fitment ranges.
✓ Verified by ANKUSI's Engineering Team — 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 | 19x8.5J at ET35 offset |
| Maximum Aggressive | 20x9.0J at ET30 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
SUVs carry more curb weight higher off the ground, so wheel strength and rotational mass both matter more than on a comparable sedan — a heavier wheel amplifies body roll and slows steering response exactly where the platform is already working hardest. Forging keeps the wheel light without giving up the load rating the factory suspension geometry was tuned around.
The Cadillac XT4 runs a 5x120 bolt pattern, 66.9mm center bore, and a 18x8.0J, front and rear, wheel from the factory. Our Flush Fitment reference is 19x8.5J ET35, which tucks the tire under the fender lip on a stock-height Cadillac XT4. Our Maximum Aggressive reference is 20x9.0J ET30 — beyond that offset, expect rubbing against the inner fender liner under compression without further trimming.
Cadillac XT4 OE Wheel Specs
The 2019 Cadillac XT4 (SUV) uses a 5x120 bolt pattern with a 66.9mm center bore. Factory wheels are 18x8.0J F/R.
Why the factory spec works for most owners:
- Keeps the factory ride quality and noise levels intact
- A common fitment for this class, so replacement tires are easy to source
- Preserves clearance around the OE brakes and suspension geometry
- Delivers predictable, easy-to-live-with handling for daily use
ANKUSI builds these wheels — we are the forging factory, not a reseller. For the Cadillac XT4 (2019) we drill the 5x120 pattern and cut the centre bore to 66.9mm 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 19x8.5J ET35 is the recommended starting point on a stock or mildly lowered Cadillac XT4.
Maximum Aggressive Fitment
F/R 20x9.0J ET30 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 ET42
Recommended setup: 18x8.0J ET42 | 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 19x8.5J ET39
Recommended setup: 19x8.5J ET39 | 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 19x8.5J ET35
Recommended setup: 19x8.5J ET35 | 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 20x9.0J ET33
Recommended setup: 20x9.0J ET33 | 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 ET30
Recommended setup: 20x9.0J ET30 | 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 ET42 | 19x8.5J ET39 | 19x8.5J ET35 | 20x9.0J ET33 | 20x9.0J ET30 |
| 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 ET42
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: 19x8.5J ET35
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 ET30
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 ET42 → ~6.15″ backspacing
- Flush: 19x8.5J ET35 → ~6.13″ backspacing
- Max: 20x9.0J ET30 → ~6.18″ 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 Cadillac spec, or want a wheel built to a custom offset for your Cadillac XT4? 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 Cadillac XT4 (2019)
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 5x120 pattern and the 66.9mm 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 Cadillac orders on this platform land somewhere between the 19x8.5J ET35 flush setup and the 20x9.0J ET30 aggressive setup referenced above.
Designs we already tool for the 5x120 pattern — each one is re-cut to your sizes and offsets:
Advan Racing Gloss White Custom Racing Forged Wheels – BMW M3 / Audi RS5 Fitment (5-Lug)
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