215/70R17 vs 255/60R17 tire size
255/60R17 vs 215/70R17, diameter
+0.7% taller
- Speedometer
- 59.6 mph
- At a true 60 mph
- Diameter
- 29.05 in
- Was 28.85 in
- Revs per mile
- 694
- Was 699
- 3% guideline
- Within
Car built for 215/70R17, now on 255/60R17.
215/70R17 and 255/60R17
| Measure | 215/70R17 | 255/60R17 | Difference |
|---|---|---|---|
| Width, mm | 215 | 255 | +40 |
| Sidewall, % of width | 70 | 60 | -10 |
| Rim, in | 17 | 17 | 0 |
| Section height, in | 5.93 | 6.02 | +0.10 |
| Diameter, in | 28.85 | 29.05 | +0.20 (+0.7%) |
| Circumference, in | 90.6 | 91.3 | +0.6 |
| Revs per mile | 699 | 694 | -5 (-0.7%) |
Fitting 255/60R17 instead of 215/70R17
Within the usual 3% diameter guideline.
- 40 mm wider. Check rubbing at full lock.
Cars with 255/60R17
What this cannot tell you
Diameter within 3% is a common shop guideline, not a maker spec.
Load index, offset and clearance are not in this data.
- Two or more sources agree
- One source
- Model-level or estimate
- Sources differ