235/70R16 vs 255/60R17 tire size
255/60R17 vs 235/70R16, diameter
+0.3% taller
- Speedometer
- 59.8 mph
- At a true 60 mph
- Diameter
- 29.05 in
- Was 28.95 in
- Revs per mile
- 694
- Was 697
- 3% guideline
- Within
Car built for 235/70R16, now on 255/60R17.
235/70R16 and 255/60R17
| Measure | 235/70R16 | 255/60R17 | Difference |
|---|---|---|---|
| Width, mm | 235 | 255 | +20 |
| Sidewall, % of width | 70 | 60 | -10 |
| Rim, in | 16 | 17 | +1 |
| Section height, in | 6.48 | 6.02 | -0.45 |
| Diameter, in | 28.95 | 29.05 | +0.09 (+0.3%) |
| Circumference, in | 91.0 | 91.3 | +0.3 |
| Revs per mile | 697 | 694 | -2 (-0.3%) |
Fitting 255/60R17 instead of 235/70R16
Within the usual 3% diameter guideline.
- Needs 17 in wheels.
- 20 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