Alfa Romeo 8C Tire Size Guide - Year & Trim Specifications
The Alfa Romeo 8C features specific tire size markings that vary by model year and trim level. Understanding these differences is essential for selecting the correct tires and rims to ensure optimal performance and safety.\n\nTire size markings for the Alfa Romeo 8C typically include width, aspect ratio, and diameter (e.g., 235/35ZR19). Rim widths range according to trim, with common references such as 8.5J × 19 for front wheels and 10J × 20 for rear wheels in select trims.\n\nWhen comparing trims, note that higher-performance variants may use wider rims and larger diameter tires to enhance handling dynamics. Consult the specific year and trim data to confirm exact dimensions and comply with manufacturer recommendations.\n\nProperly matching tire size markings and rim dimensions for your Alfa Romeo 8C will maintain driving stability and preserve ride quality while aligning with the vehicle's engineering standards.
| Make / model / trim | Year | Tire size | Wheel |
|---|---|---|---|
| Alfa Romeo 8C 4.7 | 2009 | 245/40R20 | 8.5" × 20" |
| Alfa Romeo 8C 4.7 | 2008 | 245/40R20 | 8.5" × 20" |
| Alfa Romeo 8C 4.7 | 2007 | 245/40R20 | 8.5" × 20" |
For bolt pattern (PCD), offset ET, center bore, and mounting details, open the bolt pattern page for Alfa Romeo 8C.
FAQ
- How do tire sizes differ among Alfa Romeo 8C trims?
- Higher trims often feature wider tires and larger diameter rims for improved performance, while base trims use standard sizes for comfort.
- What does the rim width × diameter indicate for my Alfa Romeo 8C?
- Rim width × diameter specifies the rim's internal width and diameter in inches, which affects tire fitment and vehicle handling.
- Can I use the same tires across all Alfa Romeo 8C model years?
- Tire sizes can vary between model years and trims, so always verify specifications to ensure compatibility and safety.
Tire size calculatorShow
Compare two tire sizes — diameter, speedometer error, and clearance change.
| Size 1 | Size 2 | Diff | Diff(%) | |
|---|---|---|---|---|
| Diameter | 25.0" | 25.4" | 0.5" | 1.89% |
| Width | 7.7" | 8.5" | 0.8" | 10.26% |
| Circumference | 78.4" | 79.9" | 1.5" | 1.86% |
| Profile height | 5.0" | 4.2" | -0.7" | -15.08% |
| Turnover per mile | 807 | 793 | 14 | -1.73% |
| Clearance | - | - | +0.2" | - |






Speedometer Error
(First wheel OEM size)
| Reading | 20 mph | 30 mph | 40 mph | 50 mph | 60 mph | 70 mph | 80 mph | 90 mph |
|---|---|---|---|---|---|---|---|---|
| Actual | 20.4 | 30.5 | 40.7 | 50.9 | 61.1 | 71.2 | 81.4 | 91.6 |
