Chrysler Crossfire SRT6 Roadster (2005) Wheel Fitment
Chrysler Crossfire SRT6 Roadster (2005): 5x112 bolt pattern, 66.5mm center bore. Factory wheels: F: 18x7.5J R: 19x9J. Reference fitment ranges.
Wheel Size & Offset at a Glance
| Configuration | Wheel Size & Offset |
|---|---|
| Factory (OE) | F: 18x7.5J R: 19x9J |
| Flush Fitment | F 19x8.5J ET30 / R 20x10J ET20 |
| Maximum Aggressive | F 19x9J ET25 / R 20x10.5J ET15 |
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.
Chrysler Crossfire SRT6 Roadster OE Wheel Specs
The 2005 Chrysler Crossfire SRT6 Roadster (Convertible) uses a 5x112 bolt pattern with a 66.5mm center bore. Factory wheels are F: 18x7.5J R: 19x9J.
Why the factory spec works for most owners:
- Matches the chassis tuning used to help offset reduced structural rigidity
- Balances ride comfort with the sportier character typical of this body style
- Keeps unsprung weight low for stable handling
- Maintains clearance for the factory brake package and suspension components
Flush Fitment
For a flush look with minimal rubbing, F 19x8.5J ET30 / R 20x10J ET20 is the recommended starting point on a stock or mildly lowered Chrysler Crossfire SRT6 Roadster.
Maximum Aggressive Fitment
F 19x9J ET25 / R 20x10.5J ET15 is a more aggressive reference setup. Beyond this, expect rubbing under compression without fender rolling or camber correction.
Real-World Fitment Notes
KW V3 coilovers; 19/20-inch Forgeline wheels; Brembo 4-piston front brakes; Michelin Pilot Sport 4S tires.
5-Tier Configuration Options
A Factory-Style F 18x7.5J ET35 / R 19x9.0J ET22
Recommended setup: F 18x7.5J ET35 / R 19x9.0J ET22 | 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 F 19x8.0J ET33 / R 20x9.5J ET21
Recommended setup: F 19x8.0J ET33 / R 20x9.5J ET21 | 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 F 19x8.5J ET30 / R 20x10.0J ET20
Recommended setup: F 19x8.5J ET30 / R 20x10.0J 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 F 19x9.0J ET28 / R 20x10.5J ET18
Recommended setup: F 19x9.0J ET28 / R 20x10.5J ET18 | 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 F 19x9.0J ET25 / R 20x10.5J ET15
Recommended setup: F 19x9.0J ET25 / R 20x10.5J ET15 | 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 | F 18x7.5J ET35 / R 19x9.0J ET22 | F 19x8.0J ET33 / R 20x9.5J ET21 | F 19x8.5J ET30 / R 20x10.0J ET20 | F 19x9.0J ET28 / R 20x10.5J ET18 | F 19x9.0J ET25 / R 20x10.5J ET15 |
| 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: F 18x7.5J ET35 / R 19x9.0J ET22
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: F 19x8.5J ET30 / R 20x10.0J 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: F 19x9.0J ET25 / R 20x10.5J ET15
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: F 18x7.5J ET35 → ~5.63″ F backspacing, R 19x9J ET22 → ~5.87″ R backspacing
- Flush: F 19x8.5J ET30 → ~5.93″ F backspacing, R 20x10J ET20 → ~6.29″ R backspacing
- Max: F 19x9J ET25 → ~5.98″ F backspacing, R 20x10.5J ET15 → ~6.34″ R 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 Chrysler spec, or want a wheel built to a custom offset for your Chrysler Crossfire SRT6 Roadster? Contact ANKUSI with your bolt pattern and offset target and we will confirm the correct forged wheel spec for your build.