245/70R17 vs 265/60R18 tire size
265/60R18 vs 245/70R17, diameter
Same diameter
- Speedometer
- 60.0 mph
- At a true 60 mph
- Diameter
- 30.52 in
- Was 30.50 in
- Revs per mile
- 661
- Was 661
- 3% guideline
- Within
Car built for 245/70R17, now on 265/60R18.
245/70R17 and 265/60R18
| Measure | 245/70R17 | 265/60R18 | Difference |
|---|---|---|---|
| Width, mm | 245 | 265 | +20 |
| Sidewall, % of width | 70 | 60 | -10 |
| Rim, in | 17 | 18 | +1 |
| Section height, in | 6.75 | 6.26 | -0.49 |
| Diameter, in | 30.50 | 30.52 | +0.02 (+0.1%) |
| Circumference, in | 95.8 | 95.9 | +0.0 |
| Revs per mile | 661 | 661 | -0 (-0.1%) |
Fitting 265/60R18 instead of 245/70R17
Within the usual 3% diameter guideline.
- Needs 18 in wheels.
- 20 mm wider. Check rubbing at full lock.
Cars with 245/70R17
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