255/65R20 vs 265/60R20 tire size
265/60R20 vs 255/65R20, diameter
-1.6% shorter
- Speedometer
- 61.0 mph
- At a true 60 mph
- Diameter
- 32.52 in
- Was 33.05 in
- Revs per mile
- 620
- Was 610
- 3% guideline
- Within
Car built for 255/65R20, now on 265/60R20.
255/65R20 and 265/60R20
| Measure | 255/65R20 | 265/60R20 | Difference |
|---|---|---|---|
| Width, mm | 255 | 265 | +10 |
| Sidewall, % of width | 65 | 60 | -5 |
| Rim, in | 20 | 20 | 0 |
| Section height, in | 6.53 | 6.26 | -0.27 |
| Diameter, in | 33.05 | 32.52 | -0.53 (-1.6%) |
| Circumference, in | 103.8 | 102.2 | -1.7 |
| Revs per mile | 610 | 620 | +10 (+1.6%) |
Fitting 265/60R20 instead of 255/65R20
Within the usual 3% diameter guideline.
Cars with 255/65R20
Cars with 265/60R20
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