255/70R16 vs 285/65R16 tire size
285/65R16 vs 255/70R16, diameter
+1.8% taller
- Speedometer
- 59.0 mph
- At a true 60 mph
- Diameter
- 30.59 in
- Was 30.06 in
- Revs per mile
- 659
- Was 671
- 3% guideline
- Within
Car built for 255/70R16, now on 285/65R16.
255/70R16 and 285/65R16
| Measure | 255/70R16 | 285/65R16 | Difference |
|---|---|---|---|
| Width, mm | 255 | 285 | +30 |
| Sidewall, % of width | 70 | 65 | -5 |
| Rim, in | 16 | 16 | 0 |
| Section height, in | 7.03 | 7.29 | +0.27 |
| Diameter, in | 30.06 | 30.59 | +0.53 (+1.8%) |
| Circumference, in | 94.4 | 96.1 | +1.7 |
| Revs per mile | 671 | 659 | -12 (-1.7%) |
Fitting 285/65R16 instead of 255/70R16
Within the usual 3% diameter guideline.
- 30 mm wider. Check rubbing at full lock.
Cars with 255/70R16
Cars with 285/65R16
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