205/55R16 vs 215/55R17 Side-by-side tire size comparison with specs and compatibility
This tire swap exceeds 5% diameter difference. Not recommended without suspension modifications. Will significantly affect speedometer, ABS, and may cause rubbing.
Full Specifications Comparison
| Specification | 205/55R16 | 215/55R17 | Difference |
|---|---|---|---|
| Overall Diameter | 631.9 mm (24.9") | 668.3 mm (26.3") | +36.4 mm |
| Section Width | 205 mm (8.1") | 215 mm (8.5") | +10 mm |
| Sidewall Height | 112.8 mm | 118.3 mm | +5.5 mm |
| Circumference | 1985.2 mm | 2099.5 mm | +114.3 mm |
| Revolutions/Mile | 811 | 767 | -44 |
| Aspect Ratio | 55% | 55% | 0% |
| Rim Diameter | 16" | 17" | +1" |
Key Impact Summary
Speedometer Correction Table
When switching from 205/55R16 to 215/55R17, your speedometer will under-read. Here is the correction at common speeds:
| Speedometer Shows | Actual Speed (mph) | Difference |
|---|---|---|
| 30 mph | 31.7 mph | +1.7 mph |
| 40 mph | 42.3 mph | +2.3 mph |
| 50 mph | 52.9 mph | +2.9 mph |
| 60 mph | 63.5 mph | +3.5 mph |
| 70 mph | 74 mph | +4 mph |
| 80 mph | 84.6 mph | +4.6 mph |
| 90 mph | 95.2 mph | +5.2 mph |
| 100 mph | 105.8 mph | +5.8 mph |
| 110 mph | 116.3 mph | +6.3 mph |
| 120 mph | 126.9 mph | +6.9 mph |
What This Swap Means
Wider tires (215/55R17): The 10mm wider contact patch provides better grip in dry conditions and improved cornering stability. However, wider tires increase rolling resistance slightly, which may affect fuel economy by 1-2%. They are also more susceptible to hydroplaning in wet conditions.
Taller sidewall: The 5.5mm increase in sidewall height provides a more comfortable ride by absorbing more road imperfections. Taller sidewalls also offer better protection against pothole damage to wheels. The trade-off is slightly less responsive steering feel.
Ground clearance: Increases by 18.2mm, providing slightly better approach angles for off-road driving and speed bump clearance.