205/55R17 vs 215/55R17
215/55R17 is taller than 205/55R17 by 1.67% — a diameter difference of 0.43″.
What changes between 205/55R17 and 215/55R17
Switching from 205/55R17 to 215/55R17 changes overall diameter by +1.67%, a taller tire by 0.43 inches. This lands inside the ±3% fitment safe zone, so most vehicles will accept the swap without rubbing, speedometer recalibration, or ABS/TPMS complications. Section width moves by +0.39″ (205mm → 215mm), which affects contact patch and fender-well clearance. Sidewall height shifts by +0.22″: a taller sidewall softens ride quality and adds off-road bump protection, with some loss of steering crispness. Revs per mile moves by -12, which translates directly to speedometer error — at an indicated 65 mph, actual speed becomes 66.1 mph. Both sizes share the same 17″ rim, so no wheel change is required — this is a pure tire-only swap.
| Spec | 205/55R17 | 215/55R17 |
|---|---|---|
| Overall diameter | 25.88″ | 26.31″ |
| Section width | 8.07″ (205 mm) | 8.46″ (215 mm) |
| Sidewall height | 4.44″ (55%) | 4.66″ (55%) |
| Rim diameter | 17″ | 17″ |
| Circumference | 81.3″ | 82.66″ |
| Revs per mile | 779 | 767 |
Interactive comparison
275/65R18 or "33" for inch aliases205/55R17
- Diameter
- 25.88″ / 657.3mm
- Section Width
- 8.07″
- Sidewall
- 4.44″ / 112.75mm
- Circumference
- 81.3″
- Revs/Mile
- 779
215/55R17
- Diameter
- 26.31″ / 668.3mm
- Section Width
- 8.46″
- Sidewall
- 4.66″ / 118.25mm
- Circumference
- 82.66″
- Revs/Mile
- 767
Speedometer & Diameter Impact
At an indicated 60 mph, your actual speed is 61 mph (98.18 km/h). Your speedometer reads 1.67% low versus actual speed.