Smart Roadster Tire Sizes and Rim Dimensions by Year and Trim
The Smart Roadster features specific tire size markings and rim dimensions that vary by model year and trim level. Understanding these differences is crucial for selecting compatible tires and rims for maintenance or upgrade purposes.\n\nEarly Smart Roadster models generally come equipped with 16-inch rims, with widths ranging typically from 6.5 to 7 inches depending on trim. Tire size markings typically include dimensions such as 205/45 R16, reflecting the tire width, aspect ratio, and rim diameter.\n\nWhen comparing trims, note that sportier versions may use wider rims for enhanced handling characteristics, while base trims maintain standard sizes for efficiency and comfort. Always cross-reference tire markings on the sidewall with the vehicle specifications to ensure proper fitment.\n\nFor optimal performance and safety, matching tire sizes and rim widths recommended for your specific Smart Roadster trim and production year is essential. Consult the vehicle handbook or a trusted tire professional when in doubt.
| Make / model / trim | Year | Tire size | Wheel |
|---|---|---|---|
| Smart Roadster 0.7 | 2005 | 185/55R15 | 5" × 15" |
| Smart Roadster 0.7 Brabus | 2005 | 185/55R15 | 5" × 15" |
| Smart Roadster 0.7 | 2004 | 185/55R15 | 5" × 15" |
| Smart Roadster 0.7 Brabus | 2004 | 185/55R15 | 5" × 15" |
| Smart Roadster 0.7 | 2003 | 185/55R15 | 5" × 15" |
| Smart Roadster 0.7 Brabus | 2003 | 185/55R15 | 5" × 15" |
For bolt pattern (PCD), offset ET, center bore, and mounting details, open the bolt pattern page for Smart Roadster.
FAQ
- What tire sizes are common for the Smart Roadster?
- Most Smart Roadster models use 205/45 R16 tires, but sizes can vary slightly depending on the trim and year.
- How does rim width vary across Smart Roadster trims?
- Rim widths typically range from 6.5 to 7 inches, with sport trims often having wider rims for better handling.
- Can I interchange tires between different Smart Roadster trims?
- While many trims use similar sizes, it's important to verify tire markings and rim widths for compatibility before interchanging.
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 |
