255/70R17 vs 265/65R17 tire size
265/65R17 vs 255/70R17, diameter
-1.6% shorter
- Speedometer
- 61.0 mph
- At a true 60 mph
- Diameter
- 30.56 in
- Was 31.06 in
- Revs per mile
- 660
- Was 649
- 3% guideline
- Within
Car built for 255/70R17, now on 265/65R17.
255/70R17 and 265/65R17
| Measure | 255/70R17 | 265/65R17 | Difference |
|---|---|---|---|
| Width, mm | 255 | 265 | +10 |
| Sidewall, % of width | 70 | 65 | -5 |
| Rim, in | 17 | 17 | 0 |
| Section height, in | 7.03 | 6.78 | -0.25 |
| Diameter, in | 31.06 | 30.56 | -0.49 (-1.6%) |
| Circumference, in | 97.6 | 96.0 | -1.5 |
| Revs per mile | 649 | 660 | +10 (+1.6%) |
Fitting 265/65R17 instead of 255/70R17
Within the usual 3% diameter guideline.
Cars with 255/70R17
Cars with 265/65R17
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