285/65R16 vs 255/70R17 tire size
255/70R17 vs 285/65R16, diameter
+1.5% taller
- Speedometer
- 59.1 mph
- At a true 60 mph
- Diameter
- 31.06 in
- Was 30.59 in
- Revs per mile
- 649
- Was 659
- 3% guideline
- Within
Car built for 285/65R16, now on 255/70R17.
285/65R16 and 255/70R17
| Measure | 285/65R16 | 255/70R17 | Difference |
|---|---|---|---|
| Width, mm | 285 | 255 | -30 |
| Sidewall, % of width | 65 | 70 | +5 |
| Rim, in | 16 | 17 | +1 |
| Section height, in | 7.29 | 7.03 | -0.27 |
| Diameter, in | 30.59 | 31.06 | +0.47 (+1.5%) |
| Circumference, in | 96.1 | 97.6 | +1.5 |
| Revs per mile | 659 | 649 | -10 (-1.5%) |
Fitting 255/70R17 instead of 285/65R16
Within the usual 3% diameter guideline.
- Needs 17 in wheels.
Cars with 285/65R16
Cars with 255/70R17
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