245/60R20 vs 265/55R20 tire size
265/55R20 vs 245/60R20, diameter
-0.3% shorter
- Speedometer
- 60.2 mph
- At a true 60 mph
- Diameter
- 31.48 in
- Was 31.57 in
- Revs per mile
- 641
- Was 639
- 3% guideline
- Within
Car built for 245/60R20, now on 265/55R20.
245/60R20 and 265/55R20
| Measure | 245/60R20 | 265/55R20 | Difference |
|---|---|---|---|
| Width, mm | 245 | 265 | +20 |
| Sidewall, % of width | 60 | 55 | -5 |
| Rim, in | 20 | 20 | 0 |
| Section height, in | 5.79 | 5.74 | -0.05 |
| Diameter, in | 31.57 | 31.48 | -0.10 (-0.3%) |
| Circumference, in | 99.2 | 98.9 | -0.3 |
| Revs per mile | 639 | 641 | +2 (+0.3%) |
Fitting 265/55R20 instead of 245/60R20
Within the usual 3% diameter guideline.
- 20 mm wider. Check rubbing at full lock.
Cars with 245/60R20
Cars with 265/55R20
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