235/55R17 vs 225/60R17
225/60R17 is taller than 235/55R17 by 1.67% — a diameter difference of 0.45″.
What changes between 235/55R17 and 225/60R17
Switching from 235/55R17 to 225/60R17 changes overall diameter by +1.67%, a taller tire by 0.45 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″ (235mm → 225mm), 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 | 235/55R17 | 225/60R17 |
|---|---|---|
| Overall diameter | 27.18″ | 27.63″ |
| Section width | 9.25″ (235 mm) | 8.86″ (225 mm) |
| Sidewall height | 5.09″ (55%) | 5.31″ (60%) |
| Rim diameter | 17″ | 17″ |
| Circumference | 85.38″ | 86.8″ |
| Revs per mile | 742 | 730 |
Interactive comparison
275/65R18 or "33" for inch aliases235/55R17
- Diameter
- 27.18″ / 690.3mm
- Section Width
- 9.25″
- Sidewall
- 5.09″ / 129.25mm
- Circumference
- 85.38″
- Revs/Mile
- 742
225/60R17
- Diameter
- 27.63″ / 701.8mm
- Section Width
- 8.86″
- Sidewall
- 5.31″ / 135mm
- Circumference
- 86.8″
- Revs/Mile
- 730
Speedometer & Diameter Impact
At an indicated 60 mph, your actual speed is 61 mph (98.17 km/h). Your speedometer reads 1.67% low versus actual speed.