235/45R21 vs 275/35R22 tire size
275/35R22 vs 235/45R21, diameter
+0.9% taller
- Speedometer
- 59.5 mph
- At a true 60 mph
- Diameter
- 29.58 in
- Was 29.33 in
- Revs per mile
- 682
- Was 688
- 3% guideline
- Within
Car built for 235/45R21, now on 275/35R22.
235/45R21 and 275/35R22
| Measure | 235/45R21 | 275/35R22 | Difference |
|---|---|---|---|
| Width, mm | 235 | 275 | +40 |
| Sidewall, % of width | 45 | 35 | -10 |
| Rim, in | 21 | 22 | +1 |
| Section height, in | 4.16 | 3.79 | -0.37 |
| Diameter, in | 29.33 | 29.58 | +0.25 (+0.9%) |
| Circumference, in | 92.1 | 92.9 | +0.8 |
| Revs per mile | 688 | 682 | -6 (-0.9%) |
Fitting 275/35R22 instead of 235/45R21
Within the usual 3% diameter guideline.
- Needs 22 in wheels.
- 40 mm wider. Check rubbing at full lock.
Cars with 235/45R21
Cars with 275/35R22
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