275/45R22 vs 285/40R23 tire size
285/40R23 vs 275/45R22, diameter
+0.7% taller
- Speedometer
- 59.6 mph
- At a true 60 mph
- Diameter
- 31.98 in
- Was 31.74 in
- Revs per mile
- 631
- Was 635
- 3% guideline
- Within
Car built for 275/45R22, now on 285/40R23.
275/45R22 and 285/40R23
| Measure | 275/45R22 | 285/40R23 | Difference |
|---|---|---|---|
| Width, mm | 275 | 285 | +10 |
| Sidewall, % of width | 45 | 40 | -5 |
| Rim, in | 22 | 23 | +1 |
| Section height, in | 4.87 | 4.49 | -0.38 |
| Diameter, in | 31.74 | 31.98 | +0.23 (+0.7%) |
| Circumference, in | 99.7 | 100.5 | +0.7 |
| Revs per mile | 635 | 631 | -5 (-0.7%) |
Fitting 285/40R23 instead of 275/45R22
Within the usual 3% diameter guideline.
- Needs 23 in wheels.
Cars with 275/45R22
Cars with 285/40R23
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