265/65R18 vs 285/60R18 tire size
285/60R18 vs 265/65R18, diameter
-0.3% shorter
- Speedometer
- 60.2 mph
- At a true 60 mph
- Diameter
- 31.46 in
- Was 31.56 in
- Revs per mile
- 641
- Was 639
- 3% guideline
- Within
Car built for 265/65R18, now on 285/60R18.
265/65R18 and 285/60R18
| Measure | 265/65R18 | 285/60R18 | Difference |
|---|---|---|---|
| Width, mm | 265 | 285 | +20 |
| Sidewall, % of width | 65 | 60 | -5 |
| Rim, in | 18 | 18 | 0 |
| Section height, in | 6.78 | 6.73 | -0.05 |
| Diameter, in | 31.56 | 31.46 | -0.10 (-0.3%) |
| Circumference, in | 99.2 | 98.8 | -0.3 |
| Revs per mile | 639 | 641 | +2 (+0.3%) |
Fitting 285/60R18 instead of 265/65R18
Within the usual 3% diameter guideline.
- 20 mm wider. Check rubbing at full lock.
Cars with 265/65R18
Cars with 285/60R18
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