Alfa Romeo 4C Spider Tire Sizes and Rim Specifications by Year and Trim
The Alfa Romeo 4C Spider features specific tire sizes and rim dimensions that vary by model year and trim. Early trims typically come with 18-inch rims in front and 19-inch rims in the rear, with tire sizes ranging to balance performance and handling.\n\nTire size markings on the 4C Spider include width, aspect ratio, and diameter references, important for matching replacement tires accurately. Rim widths differ between front and rear axles, affecting tire selection for optimal fit and vehicle dynamics.\n\nWhen comparing trims, it's crucial to verify both tire size and rim width as these factors directly influence ride quality and safety. Consulting manufacturer specifications or verified catalogs ensures proper tire fitment for each model year and trim of the Alfa Romeo 4C Spider.
| Make / model / trim | Year | Tire size | Wheel |
|---|---|---|---|
| Alfa Romeo 4C Spider 1.8 TBi | 2019 | 205/40R17 | 7" × 17" |
| Alfa Romeo 4C Spider 1.8 TBi | 2018 | 205/40R17 | 7" × 17" |
| Alfa Romeo 4C Spider 1.8 TBi | 2017 | 205/40R17 | 7" × 17" |
| Alfa Romeo 4C Spider 1.8 TBi | 2016 | 205/40R17 | 7" × 17" |
| Alfa Romeo 4C Spider 1.8 TBi | 2015 | 205/40R17 | 7" × 17" |
| Alfa Romeo 4C Spider 1.8 TBi | 2014 | 205/40R17 | 7" × 17" |
For bolt pattern (PCD), offset ET, center bore, and mounting details, open the bolt pattern page for Alfa Romeo 4C Spider.
FAQ
- What are the common tire sizes for the Alfa Romeo 4C Spider?
- The Alfa Romeo 4C Spider commonly uses 205/40ZR18 tires in front and 235/35ZR19 in the rear, though sizes may vary with model year and trim.
- How does rim width affect tire selection on the 4C Spider?
- Rim width determines the acceptable tire width and affects tire seating, impacting handling and safety, so it must match manufacturer recommendations.
- Can tire sizes differ between trims of the same model year?
- Yes, different trims may feature distinct tire and rim combinations to cater to performance or comfort preferences.
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 |
