215/65R16 vs 225/65R16
225/65R16 is taller than 215/65R16 by 1.90% — a diameter difference of 0.52″.
What changes between 215/65R16 and 225/65R16
Switching from 215/65R16 to 225/65R16 changes overall diameter by +1.90%, a taller tire by 0.52 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 +0.40″ (215mm → 225mm), which affects contact patch and fender-well clearance. Sidewall height shifts by +0.26″: 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 66.2 mph. Both sizes share the same 16″ rim, so no wheel change is required — this is a pure tire-only swap.
| Spec | 215/65R16 | 225/65R16 |
|---|---|---|
| Overall diameter | 27″ | 27.52″ |
| Section width | 8.46″ (215 mm) | 8.86″ (225 mm) |
| Sidewall height | 5.5″ (65%) | 5.76″ (65%) |
| Rim diameter | 16″ | 16″ |
| Circumference | 84.84″ | 86.44″ |
| Revs per mile | 747 | 733 |
Interactive comparison
275/65R18 or "33" for inch aliases215/65R16
- Diameter
- 27″ / 685.9mm
- Section Width
- 8.46″
- Sidewall
- 5.5″ / 139.75mm
- Circumference
- 84.84″
- Revs/Mile
- 747
225/65R16
- Diameter
- 27.52″ / 698.9mm
- Section Width
- 8.86″
- Sidewall
- 5.76″ / 146.25mm
- Circumference
- 86.44″
- Revs/Mile
- 733
Speedometer & Diameter Impact
At an indicated 60 mph, your actual speed is 61.14 mph (98.39 km/h). Your speedometer reads 1.90% low versus actual speed.