265/45R21 vs 245/45R22 tire size
245/45R22 vs 265/45R21, diameter
+1.0% taller
- Speedometer
- 59.4 mph
- At a true 60 mph
- Diameter
- 30.68 in
- Was 30.39 in
- Revs per mile
- 657
- Was 664
- 3% guideline
- Within
Car built for 265/45R21, now on 245/45R22.
265/45R21 and 245/45R22
| Measure | 265/45R21 | 245/45R22 | Difference |
|---|---|---|---|
| Width, mm | 265 | 245 | -20 |
| Sidewall, % of width | 45 | 45 | 0 |
| Rim, in | 21 | 22 | +1 |
| Section height, in | 4.69 | 4.34 | -0.35 |
| Diameter, in | 30.39 | 30.68 | +0.29 (+1.0%) |
| Circumference, in | 95.5 | 96.4 | +0.9 |
| Revs per mile | 664 | 657 | -6 (-0.9%) |
Fitting 245/45R22 instead of 265/45R21
Within the usual 3% diameter guideline.
- Needs 22 in wheels.
Cars with 265/45R21
Cars with 245/45R22
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