255/65R17 vs 265/60R18 tire size
265/60R18 vs 255/65R17, diameter
+1.6% taller
- Speedometer
- 59.1 mph
- At a true 60 mph
- Diameter
- 30.52 in
- Was 30.05 in
- Revs per mile
- 661
- Was 671
- 3% guideline
- Within
Car built for 255/65R17, now on 265/60R18.
255/65R17 and 265/60R18
| Measure | 255/65R17 | 265/60R18 | Difference |
|---|---|---|---|
| Width, mm | 255 | 265 | +10 |
| Sidewall, % of width | 65 | 60 | -5 |
| Rim, in | 17 | 18 | +1 |
| Section height, in | 6.53 | 6.26 | -0.27 |
| Diameter, in | 30.05 | 30.52 | +0.47 (+1.6%) |
| Circumference, in | 94.4 | 95.9 | +1.5 |
| Revs per mile | 671 | 661 | -10 (-1.5%) |
Fitting 265/60R18 instead of 255/65R17
Within the usual 3% diameter guideline.
- Needs 18 in wheels.
Cars with 255/65R17
Cars with 265/60R18
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