205/55R16 vs 215/55R16
215/55R16 is taller than 205/55R16 by 1.74% — a diameter difference of 0.43″.
What changes between 205/55R16 and 215/55R16
Switching from 205/55R16 to 215/55R16 changes overall diameter by +1.74%, 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 -14, which translates directly to speedometer error — at an indicated 65 mph, actual speed becomes 66.1 mph. Both sizes share the same 16″ rim, so no wheel change is required — this is a pure tire-only swap.
| Spec | 205/55R16 | 215/55R16 |
|---|---|---|
| Overall diameter | 24.88″ | 25.31″ |
| Section width | 8.07″ (205 mm) | 8.46″ (215 mm) |
| Sidewall height | 4.44″ (55%) | 4.66″ (55%) |
| Rim diameter | 16″ | 16″ |
| Circumference | 78.16″ | 79.52″ |
| Revs per mile | 811 | 797 |
Interactive comparison
275/65R18 or "33" for inch aliases205/55R16
- Diameter
- 24.88″ / 631.9mm
- Section Width
- 8.07″
- Sidewall
- 4.44″ / 112.75mm
- Circumference
- 78.16″
- Revs/Mile
- 811
215/55R16
- Diameter
- 25.31″ / 642.9mm
- Section Width
- 8.46″
- Sidewall
- 4.66″ / 118.25mm
- Circumference
- 79.52″
- Revs/Mile
- 797
Speedometer & Diameter Impact
At an indicated 60 mph, your actual speed is 61.04 mph (98.24 km/h). Your speedometer reads 1.74% low versus actual speed.